Everywhere: Fix many spelling errors

Author: https://github.com/mjz19910
Commit: 3102d8e160
Pull-request: https://github.com/SerenityOS/serenity/pull/11666
Reviewed-by: https://github.com/creator1creeper1
Reviewed-by: https://github.com/linusg ✅

Userland/Demos/Fire/Fire.cpp

@@ -20,7 +20,7 @@
  *  [ ] switch to use tsc values for perf check
  *  [ ] handle mouse events differently for smoother painting (queue)
  *  [ ] handle fire bitmap edges better
-*/
+ */
 
 #include <LibCore/ElapsedTimer.h>
 #include <LibCore/System.h>
@@ -107,7 +107,7 @@ Fire::Fire()
         bitmap->scanline_u8(bitmap->height() - 1)[i] = FIRE_MAX;
 
     /* Set off initital paint event */
-    //update();
+    // update();
 }
 
 Fire::~Fire()
@@ -134,7 +134,7 @@ void Fire::timer_event(Core::TimerEvent&)
     if (phase > 1)
         phase = 0;
 
-    /* Paint our palettized buffer to screen */
+    /* Paint our palletized buffer to screen */
     for (int px = 0 + phase; px < FIRE_WIDTH; px += 2) {
         for (int py = 1; py < FIRE_HEIGHT; py++) {
             int rnd = rand() % 3;