Cleanup: spelling in comments

Fixed a couple of typos in comments in CMakeLists.txt and GNUmakefile

Reviewed By: #platforms_builds_tests, mont29

Differential Revision: https://developer.blender.org/D9261

CMakeLists.txt

@@ -43,8 +43,8 @@ endif()
 
 cmake_minimum_required(VERSION 3.10)
 
-# Prever LEGACY OpenGL to eb compatible with all the existing releases and
-# platforms which don't hare GLVND yet. Only do it if preference was not set
+# Prefer LEGACY OpenGL to be compatible with all the existing releases and
+# platforms which don't have GLVND yet. Only do it if preference was not set
 # externally.
 if(NOT DEFINED OpenGL_GL_PREFERENCE)
   set(OpenGL_GL_PREFERENCE "LEGACY")

GNUmakefile

@@ -89,7 +89,7 @@ Spell Checkers
    * check_spelling_osl:    Check for spelling errors (OSL only).
    * check_spelling_py:     Check for spelling errors (Python only).
 
-   Note that spell checkers can tak a 'CHECK_SPELLING_CACHE' filepath argument,
+   Note that spell checkers can take a 'CHECK_SPELLING_CACHE' filepath argument,
    so re-running does not need to re-check unchanged files.
 
    Example: