Rename Brigadier and Bukkit comparison page title

Co-authored-by: Ollie <69084614+olijeffers0n@users.noreply.github.com>

Author: Strokkur424

docs/paper/dev/api/command-api/misc/comparison-bukkit-brigadier.mdx

@@ -6,7 +6,7 @@ description: A comparison between Brigadier commands and Bukkit commands
 import BukkitPartyCommandImage from './assets/bukkitparty-command.png'
 import PaperPartyCommandImage from './assets/paperparty-command.png'
 
-# Comparison Brigadier and Bukkit Commands
+# Comparing Brigadier and Bukkit Commands
 
 ## Registering commands
 ### The old Bukkit way