Cleanup: Spelling in build_files directory

Fixes two typos in comments:

"Requried" -> "Required"
"notarizatiom" -> "notarization"

Fixes one typo in a docstring:

"clonable" -> "cloneable"

Pull Request: https://projects.blender.org/blender/blender/pulls/163847

build_files/build_environment/linux/linux_rocky8_setup.sh

@@ -69,7 +69,7 @@ PACKAGES_FOR_LIBS=(
     automake
     libtool
 
-    # Requried by flex
+    # Required by flex
     help2man
 
     # Required by: `external_libsndfile` configure scripts.

build_files/build_environment/utils/set_rpath.py

@@ -16,7 +16,7 @@ import subprocess
 import sys
 
 
-# Strip version numbers from dependencies macOS notarizatiom fails
+# Strip version numbers from dependencies macOS notarization fails
 # with version symlinks.
 def strip_lib_version(name):
     name = re.sub(r'(\.[0-9]+)+.dylib', '.dylib', name)

build_files/utils/make_utils.py

@@ -145,7 +145,7 @@ def git_remote_exist(git_command: str, remote_name: str) -> bool:
 
 
 def git_is_remote_repository(git_command: str, repo: str) -> bool:
-    """Returns true if the given repository is a valid/clonable git repo"""
+    """Returns true if the given repository is a valid/cloneable git repo"""
     exit_code = call((git_command, "ls-remote", repo, "HEAD"), exit_on_error=False, silent=True)
     return exit_code == 0