fix: typos (#4202)

Co-authored-by: Bart Louwers <bart@emeel.net>

CMakeLists.txt

@@ -1246,7 +1246,7 @@ if(MLN_WITH_METAL AND MLN_CREATE_AUTORELEASEPOOL)
     # in memory leaks when autoreleased objects are created.
 
     # Platforms such as iOS and GLFW use ARC with @autoreleasepool blocks, for these platforms
-    # creating an AutoreleasePool is not neccesary (and in fact will not work).
+    # creating an AutoreleasePool is not necessary (and in fact will not work).
     # When using MapLibre Native with Metal on other platforms such as Node.js, you can pass
     # this variable to ensure an AutoReleasePool is created in the render loop.
     # See also: