fix spellcheck glob

Since we're running the check in sh, it does not have globstar option
to handle '**/*.md' properly. It only checked exactly one level deep
markdown files. Spellcheck handles globs itself, so just adding quotes
is enough to fix it.

Second commit fixes all the spellcheck issues found by this fix.

Signed-off-by: Tuomo Tanskanen <[email protected]>

hack/spellcheck.sh

@@ -20,7 +20,7 @@ WORKDIR="${WORKDIR:-/workdir}"
 
 # all md files, but ignore .github and node_modules
 if [ "${IS_CONTAINER}" != "false" ]; then
-    cspell-cli --show-suggestions -c .cspell-config.json -- ./**/*.md
+    cspell-cli --show-suggestions -c .cspell-config.json -- "./**/*.md"
 else
     "${CONTAINER_RUNTIME}" run --rm \
         --env IS_CONTAINER=TRUE \