Fix a few typos (#699)

Co-authored-by: smallmodel <[email protected]>

Author: twolife

code/fgame/actor.cpp

@@ -432,7 +432,7 @@ Event EV_Actor_SetAnimFinal
     EV_DEFAULT,
     NULL,
     NULL,
-    "Whether the animation was succesfully finished",
+    "Whether the animation was successfully finished",
     EV_SETTER
 );
 Event EV_Actor_GetWeaponType

code/fgame/trigger.cpp

@@ -77,7 +77,7 @@ Event EV_Trigger_SetCount
     EV_DEFAULT,
     "i",
     "count",
-    "Set the amount of times this trigger can be triggered",
+    "Set the number of times this trigger can be triggered",
     EV_NORMAL
 );
 Event EV_Trigger_SetMessage

code/qcommon/listener.cpp

@@ -669,7 +669,7 @@ void EventArgDef::Setup(const char *eventName, const char *argName, const char *
             if (!endptr) {
                 assert(0);
                 EVENT_Printf(
-                    "Argument defintion %s, no matching ']' found for range spec in event %s.\n",
+                    "Argument definition %s, no matching ']' found for range spec in event %s.\n",
                     name.c_str(),
                     eventName
                 );