Minor formatting change

Author: Kiloku

Changelog.md

@@ -3,7 +3,7 @@ All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
-## [19.0.0-RC1] - 2019-08-29 [Thread](https://www.hard-light.net/forums/index.php?topic=95868.0)
+## [19.0.0-RC1] - 2019-08-29 ([Thread](https://www.hard-light.net/forums/index.php?topic=95868.0))
 ### Meta
 - With this release we decided to drop the "`3.Major_revision.Minor_revision`" versioning scheme in favor of a year based scheme since the Major and Minor versions did not have much meaning anymore. Instead the scheme will now be "`<year>.<number that is incremented every release>.0`". The last 0 is still there because some of our systems expect that. It will be gone at some point.
 ### Added
@@ -24,7 +24,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 ### Fixed
 - Refactored bitmap slot handling and removed the fixed upper limit on the number of bitmaps. No more bmpman corruption!
 
-## [3.8.0] - 2017-08-22 [Release Thread](https://www.hard-light.net/forums/index.php?topic=93812.0)
+## [3.8.0] - 2017-08-22 ([Release Thread](https://www.hard-light.net/forums/index.php?topic=93812.0))
 ### Added
 - Support for APNG animations: [APNG](https://en.wikipedia.org/wiki/APNG) is a variant of the established PNG format which allows to store animations instead of single frames in a PNG file. This change allows to use these animation files in FSO which significantly improves usability for modders since they no longer have to store all individual frames as separate images.
 - Physically-Based Rendering (PBR): This upgrade of our rendering engine allows to use [PBR](https://en.wikipedia.org/wiki/Physically_based_rendering) assets to make models look more realistic and allow more artistic freedom for modders since they have more control over how a model looks. This also added support for HDR lighting which should improve the overall graphics experience.
@@ -41,14 +41,14 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 - Use FFmpeg for video & audio decoding: [FFmpeg](https://www.ffmpeg.org/) is a multi-media library which exposes functionality for decoding video and audio files to their raw form so that we can use that data. Thanks to this library we can now play 1080p cutscenes without any stuttering or frame-timing issues. It also allows to use more advanced audio and video codecs such as H.264 for video or Opus for audio.
 
 
-## [3.7.4] - 2016-07-04 [Release thread](http://www.hard-light.net/forums/index.php?topic=92181.0)
+## [3.7.4] - 2016-07-04 ([Release thread](http://www.hard-light.net/forums/index.php?topic=92181.0))
 ### Changed
 - Major graphics update including deferred lighting and shadows
 - Enhanced sound (up to 128 channels)
 ### Fixed
 - "Tons" of bugfixes
 
-## [3.7.2] - 2015-04-23 [Release thread](http://www.hard-light.net/forums/index.php?topic=89597.0)
+## [3.7.2] - 2015-04-23 ([Release thread](http://www.hard-light.net/forums/index.php?topic=89597.0))
 ### Added
 - MediaVPS 2014 Support
 - Autospread on model point shields
@@ -71,24 +71,24 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 - allowing `fade-in` and `fade-out` sexps to use any color, not just black, white and red.
 
 
-## [3.7.0] - 2013-08-31 [Release thread](http://www.hard-light.net/forums/index.php?topic=85435.0)
+## [3.7.0] - 2013-08-31 ([Release thread](http://www.hard-light.net/forums/index.php?topic=85435.0))
 ### Major Change
 - New Flexible Pilot Save File Code (combines single/multi pilots & allows safe switching between unfinished campaigns)
 ### Changed
 - Raised the per-model debris limit to 48 (previously 32).
 - Increased the per-frame debris limit to 96 (previously 64)
 
-## [3.6.18] - 2013-03-01 [Release thread](http://www.hard-light.net/forums/index.php?topic=83889.0)
+## [3.6.18] - 2013-03-01 ([Release thread](http://www.hard-light.net/forums/index.php?topic=83889.0))
 ### Fixed
 - Critical damage bug which caused heavy balance issues in the game
 
-## [3.6.16] - 2013-01-31 [Release thread](http://www.hard-light.net/forums/index.php?topic=83577.0)
+## [3.6.16] - 2013-01-31 ([Release thread](http://www.hard-light.net/forums/index.php?topic=83577.0))
 ### Added
 - Diaspora TC support
 ### Changed
 - Performance Improvements
 
-## [3.6.14] - 2012-10-23 - [Release thread](https://www.hard-light.net/forums/index.php?topic=82648.0)
+## [3.6.14] - 2012-10-23 - ([Release thread](https://www.hard-light.net/forums/index.php?topic=82648.0))
 ### Added
 - Objecttype tables support for deciding how enemies respond to ship classes when disabled
 - Allow modders to set a [mood](http://www.hard-light.net/forums/index.php?topic=81991.msg1639770#msg1639770) for builtin messages and then switch the mood for the mission on the fly using a SEXP