move changelog to correct section

Author: ab9rf

docs/changelog.txt

@@ -61,6 +61,7 @@ Template for new versions:
 ## Fixes
 
 ## Misc Improvements
+- The ``fpause`` console command can now be used to force world generation to pause (as it did prior to version 50).
 
 ## Documentation
 
@@ -80,7 +81,6 @@ Template for new versions:
 - `sort`: Using the squad unit selector will no longer cause Dwarf Fortress to crash on exit
 
 ## Misc Improvements
--- The ``fpause`` console command can now be used to force world generation to pause (as it did prior to version 50).
 
 ## Documentation