Update doc-format and boot.janet docstrings.

Make doc-format respect leading indents, increase the default format
width to better accommodate markdown formatted documentation. We still
need to support single line style doc strings, such as those used
for most c functions which can be a single line of much longer than
80 or 120 characters.

Consecutive whitespace internal to lines is not preserved, though.

build_win.bat

@@ -28,10 +28,10 @@ if not "%JANET_BUILD%" == "" (
     @set JANET_COMPILE=%JANET_COMPILE% /DJANET_BUILD="\"%JANET_BUILD%\""
 )
 
-mkdir build
-mkdir build\core
-mkdir build\mainclient
-mkdir build\boot
+if not exist build mkdir build
+if not exist build\core mkdir build\core
+if not exist build\mainclient mkdir build\mainclient
+if not exist build\boot mkdir build\boot
 
 @rem Build the bootstrap interpreter
 for %%f in (src\core\*.c) do (

src/core/net.c

@@ -621,7 +621,7 @@ static const JanetReg net_cfuns[] = {
         "net/listen", cfun_net_listen,
         JDOC("(net/listen host port &opt type)\n\n"
              "Creates a server. Returns a new stream that is neither readable nor "
-             "writeable. Use net/accept or net/accept-loop be to handle connections and start the server."
+             "writeable. Use net/accept or net/accept-loop be to handle connections and start the server. "
              "The type parameter specifies the type of network connection, either "
              "a :stream (usually tcp), or :datagram (usually udp). If not specified, the default is "
              ":stream. The host and port arguments are the same as in net/address.")
@@ -681,7 +681,7 @@ static const JanetReg net_cfuns[] = {
     },
     {
         "net/connect", cfun_net_connect,
-        JDOC("(net/connect host porti &opt type)\n\n"
+        JDOC("(net/connect host port &opt type)\n\n"
              "Open a connection to communicate with a server. Returns a duplex stream "
              "that can be used to communicate with the server. Type is an optional keyword "
              "to specify a connection type, either :stream or :datagram. The default is :stream. ")