Correct spelling mistakes.

code/client/cl_main.c

@@ -573,7 +573,7 @@ CLIENT RELIABLE COMMAND COMMUNICATION
 ======================
 CL_AddReliableCommand
 
-The given command will be transmitted to the server, and is gauranteed to
+The given command will be transmitted to the server, and is guaranteed to
 not have future usercmd_t executed before it is executed
 ======================
 */
@@ -1960,7 +1960,7 @@ void CL_Vid_Restart_f( void ) {
 		CL_ShutdownCGame();
 		// shutdown the renderer and clear the renderer interface
 		CL_ShutdownRef();
-		// client is no longer pure untill new checksums are sent
+		// client is no longer pure until new checksums are sent
 		CL_ResetPureClientAtServer();
 		// clear pak references
 		FS_ClearPakReferences( FS_UI_REF | FS_CGAME_REF );
@@ -1971,7 +1971,7 @@ void CL_Vid_Restart_f( void ) {
 		cls.cgameStarted = qfalse;
 		cls.soundRegistered = qfalse;
 
-		// unpause so the cgame definately gets a snapshot and renders a frame
+		// unpause so the cgame definitely gets a snapshot and renders a frame
 		Cvar_Set("cl_paused", "0");
 
 		// initialize the renderer interface
@@ -3301,7 +3301,7 @@ void CL_InitRef( void ) {
 
 	re = *ret;
 
-	// unpause so the cgame definately gets a snapshot and renders a frame
+	// unpause so the cgame definitely gets a snapshot and renders a frame
 	Cvar_Set( "cl_paused", "0" );
 }