Move turtle docs into the Java code instead

Yeah, should have seen that coming

src/main/java/dan200/computercraft/shared/turtle/apis/TurtleAPI.java

@@ -25,9 +25,52 @@ import java.util.Map;
 import java.util.Optional;
 
 /**
- * Doc stub. Exists in turtle.lua instead.
+ * Turtles are a robotic device, which can break and place blocks, attack mobs, and move about the world. They have
+ * an internal inventory of 16 slots, allowing them to store blocks they have broken or would like to place.
  *
+ * ## Movement
+ * Turtles are capable of moving throug the world. As turtles are blocks themselves, they are confined to Minecraft's
+ * grid, moving a single block at a time.
+ *
+ * {@literal @}{turtle.forward} and @{turtle.back} move the turtle in the direction it is facing, while @{turtle.up} and
+ * {@literal @}{turtle.down} move it up and down (as one might expect!). In order to move left or right, you first need
+ * to turn the turtle using @{turtle.turnLeft}/@{turtle.turnRight} and then move forward or backwards.
+ *
+ * :::info
+ * The name "turtle" comes from [Turtle graphics], which originated from the Logo programming language. Here you'd move
+ * a turtle with various commands like "move 10" and "turn left", much like ComputerCraft's turtles!
+ * :::
+ *
+ * Moving a turtle (though not turning it) consumes *fuel*. If a turtle does not have any @{turtle.refuel|fuel}, it
+ * won't move, and the movement functions will return @{false}. If your turtle isn't going anywhere, the first thing to
+ * check is if you've fuelled your turtle.
+ *
+ * :::tip Handling errors
+ * Many turtle functions can fail in various ways. For instance, a turtle cannot move forward if there's already a block
+ * there. Instead of erroring, functions which can fail either return @{true} if they succeed, or @{false} and some
+ * error message if they fail.
+ *
+ * Unexpected failures can often lead to strange behaviour. It's often a good idea to check the return values of these
+ * functions, or wrap them in @{assert} (for instance, use `assert(turtle.forward())` rather than `turtle.forward()`),
+ * so the program doesn't misbehave.
+ * :::
+ *
+ * ## Turtle upgrades
+ * While a normal turtle can move about the world and place blocks, its functionality is limited. Thankfully, turtles
+ * can be upgraded with *tools* and @{peripheral|peripherals}. Turtles have two upgrade slots, one on the left and right
+ * sides. Upgrades can be equipped by crafting a turtle with the upgrade, or calling the @{turtle.equipLeft}/@{turtle.equipRight}
+ * functions.
+ *
+ * Turtle tools allow you to break blocks (@{turtle.dig}) and attack entities (@{turtle.attack}). Some tools are more
+ * suitable to a task than others. For instance, a diamond pickaxe can break every block, while a sword does more
+ * damage. Other tools have more niche use-cases, for instance hoes can til dirt.
+ *
+ * Peripherals (such as the @{modem|wireless modem} or @{speaker}) can also be equipped as upgrades. These are then
+ * accessible by accessing the `"left"` or `"right"` peripheral.
+ *
+ * [Turtle Graphics]: https://en.wikipedia.org/wiki/Turtle_graphics "Turtle graphics"
  * @cc.module turtle
+ * @cc.since 1.3
  */
 public class TurtleAPI implements ILuaAPI
 {

src/main/resources/data/computercraft/lua/rom/apis/turtle/turtle.lua

@@ -1,51 +1,4 @@
---[[- Turtles are a robotic device, which can break and place blocks, attack mobs, and move about the world. They have
-an internal inventory of 16 slots, allowing them to store blocks they have broken or would like to place.
-
-## Movement
-Turtles are capable of moving throug the world. As turtles are blocks themselves, they are confined to Minecraft's grid,
-moving a single block at a time.
-
-@{turtle.forward} and @{turtle.back} move the turtle in the direction it is facing, while @{turtle.up} and
-@{turtle.down} move it up and down (as one might expect!). In order to move left or right, you first need to turn the
-turtle using @{turtle.turnLeft}/@{turtle.turnRight} and then move forward or backwards.
-
-:::info
-The name "turtle" comes from [Turtle graphics], which originated from the Logo programming language. Here you'd move
-a turtle with various commands like "move 10" and "turn left", much like ComputerCraft's turtles!
-:::
-
-Moving a turtle (though not turning it) consumes *fuel*. If a turtle does not have any @{turtle.refuel|fuel}, it won't
-move, and the movement functions will return @{false}. If your turtle isn't going anywhere, the first thing to check
-is if you've fuelled your turtle.
-
-:::tip Handling errors
-Many turtle functions can fail in various ways. For instance, a turtle cannot move forward if there's already a block
-there. Instead of erroring, functions which can fail either return @{true} if they succeed, or @{false} and some error
-message if they fail.
-
-Unexpected failures can often lead to strange behaviour. It's often a good idea to check the return values of these
-functions, or wrap them in @{assert} (for instance, use `assert(turtle.forward())` rather than `turtle.forward()`),
-so the program doesn't misbehave.
-:::
-
-## Turtle upgrades
-While a normal turtle can move about the world and place blocks, its functionality is limited. Thankfully, turtles can
-be upgraded with *tools* and @{peripheral|peripherals}. Turtles have two upgrade slots, one on the left and right sides.
-Upgrades can be equipped by crafting a turtle with the upgrade, or calling the @{turtle.equipLeft}/@{turtle.equipRight}
-functions.
-
-Turtle tools allow you to break blocks (@{turtle.dig}) and attack entities (@{turtle.attack}). Some tools are more
-suitable to a task than others. For instance, a diamond pickaxe can break every block, while a sword does more damage.
-Other tools have more niche use-cases, for instance hoes can til dirt.
-
-Peripherals (such as the @{modem|wireless modem} or @{speaker}) can also be equipped as upgrades. These are then
-accessible by accessing the `"left"` or `"right"` peripheral.
-
-[Turtle Graphics]: https://en.wikipedia.org/wiki/Turtle_graphics "Turtle graphics"
-
-@module turtle
-@since 1.3
-]]
+--- @module turtle
 
 if not turtle then
     error("Cannot load turtle API on computer", 2)