docs: Rigid style guide for changelog

CHANGELOG.md

@@ -1,4 +1,18 @@
-<!-- Keep a Changelog guide -> https://keepachangelog.com -->
+<!--
+Changelog structure reference:
+<<
+## [Version]
+
+### Type
+
+#### Category
+>>
+"Type" is one of [Added, Changed, Deprecated, Removed, Fixed, Security]
+"Category" should be something that can be quickly recognized by readers ("Highlighting", "Code Completion", "Folding", etc.)
+
+"Type" ALWAYS follows the order in the list above
+"Category" ALWAYS alphabetically sorted
+-->
 
 # ZigBrains
 
@@ -6,20 +20,20 @@
 
 ### Added
 
-#### LSP
-- Temporary "increase timeout" toggle (currently, it bumps all timeouts to 15 seconds)
-
 #### Highlighting
 - Support for Semantic Token Deltas (more compact way for the LSP server to send back data when typing fast)
 
-### Fixed
+#### LSP
+- Temporary "increase timeout" toggle (currently, it bumps all timeouts to 15 seconds)
 
-#### Highlighting
-- Last token in file not getting highlighted
+### Fixed
 
 #### Folding
 - Occasional NPE in LSP4IntellIJ
 
+#### Highlighting
+- Last token in file not getting highlighted
+
 #### LSP
 - (Windows) ZLS binary not executing if the file path has weird characters