make spacing between sections consistent

README.md

@@ -13,7 +13,6 @@ See [Contributing](.github/CONTRIBUTING.md).
 
 ## Table of contents
 
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 - [Software](#software)
   - [Analytics](#analytics)
   - [Archiving and Digital Preservation (DP)](#archiving-and-digital-preservation-dp)
@@ -113,7 +112,6 @@ See [Contributing](.github/CONTRIBUTING.md).
 
 ## Software
 
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 ### Analytics
 
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@@ -252,6 +250,7 @@ _Related: [Polls and Events](#polls-and-events)_
 - [unmark](https://unmark.it/) - Open source to do app for links. ([Source Code](https://github.com/cdevroe/unmark)) `MIT` `PHP`
 - [xBrowserSync](https://www.xbrowsersync.org) - Open source tool for syncing browser data between browsers and devices. ([Source Code](https://github.com/xBrowserSync)) `MIT` `Nodejs`
 
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 ### Calendar & Contacts
 
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@@ -285,6 +284,7 @@ _See also: [Comparison of CalDAV and CardDAV implementations - Wikipedia](https:
 - [EteSync Web](https://www.etesync.com/faq/#web-client) - EteSync's official Web-based client (i.e., their Web app). ([Demo](https://client.etesync.com/), [Source Code](https://github.com/etesync/etesync-web)) `AGPL-3.0` `Javascript`
 - [InfCloud](https://www.inf-it.com/open-source/clients/infcloud/) - Open source CalDAV/CardDAV web client implementation. ([Demo](https://www.inf-it.com/infcloud/), [Source Code](https://www.inf-it.com/InfCloud_0.13.1.zip)) `AGPL-3.0` `Javascript`
 
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 ### Communication
 
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@@ -926,6 +926,7 @@ _Related: [Groupware](#groupware)_
 - [YouTransfer](https://www.youtransfer.io) - YouTransfer is a simple but elegant self-hosted file transfer and sharing solution. ([Source Code](https://github.com/YouTransfer/YouTransfer)) `Apache-2.0` `Nodejs`
 - [Zipline](https://zipline.diced.me/) - A lightweight, fast and reliable file sharing server that is commonly used with ShareX, offering a react-based Web UI and fast API. ([Source Code](https://github.com/diced/zipline)) `MIT` `Nodejs`
 
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 ### File Transfer - Web-based File Managers
 
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@@ -1061,6 +1062,7 @@ Games, game servers and control panels.
 - [My Mind](https://github.com/ondras/my-mind) - Web application for creating and managing mind maps. ([Demo](https://my-mind.github.io/?url=examples%2Ffeatures.mymind)) `MIT` `Javascript`
 - [Weaviate](https://weaviate.io/) - A cloud-native, realtime vector search engine integrating scalable machine learning models (GraphQL and RESTful APIs). ([Demo](https://github.com/semi-technologies/semantic-search-through-wikipedia-with-weaviate/), [Source Code](https://github.com/semi-technologies/weaviate), [Clients](https://weaviate.io/developers/weaviate/current/client-libraries/index.html)) `BSD-3-Clause` `Go`
 
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 ### Learning and Courses
 
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@@ -1300,6 +1302,7 @@ _See also: [awesome-sysadmin/IT Asset Management](https://github.com/awesome-fos
 
 **Please visit [awesome-sysadmin/Monitoring](https://github.com/awesome-foss/awesome-sysadmin#monitoring), [awesome-sysadmin/Metric and Metric Collection](https://github.com/awesome-foss/awesome-sysadmin#metric--metric-collection)**
 
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 ### Note-taking & Editors
 
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@@ -1537,8 +1540,6 @@ _Related: [Booking and Scheduling](#booking-and-scheduling)_
 - [Tandoor Recipes](https://docs.tandoor.dev/) - Django application to manage, tag and search recipes using either built-in models or external storage providers hosting PDFs, Images or other files. ([Demo](https://app.tandoor.dev/), [Source Code](https://github.com/vabene1111/recipes/)) `MIT` `Python`
 
 
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 ### Resource Planning
 
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