Update info_changelog.txt

Author: Bitl

game/quiver/info_changelog.txt

@@ -78,6 +78,7 @@ Added the following Source SDK Pull Requests:
 	- #1512: Explain client crash reason when malicious server sends CUtlVector length out of allowed range
 	- #1514: Crusader's Crossbow arrow healing is now affected by mult_health_fromhealers (used by Back Scratcher)
 	- #1515: Add "ParticleEffectStopAndDestroy" Client Effect and "DestroyImmediately" Input for info_particle_system
+	- #1516: Fix not being able to toggle off the orthographic camera
 
 Details:
 - Fixed a bug where the mini-crit damage effect doesn't show up when your shield breaks.