Fix: A lot of typos in code found by typos

Yet another great code spellchecker: https://github.com/crate-ci/typos/

(Will be added later as a `pre-commit` hook)

Utilities/Scripts/update-third-party.bash

@@ -119,7 +119,7 @@ cd "$toplevel_dir"
     die "'tag' is empty"
 
 # Check for an empty destination directory on disk.  By checking on disk and
-# not in the repo it allows a library to be freshly re-inialized in a single
+# not in the repo it allows a library to be freshly re-initialized in a single
 # commit rather than first deleting the old copy in one commit and adding the
 # new copy in a separate commit.
 if [ ! -d "$(git rev-parse --show-toplevel)/$subtree" ]; then