chore(internal): refactor release environment script (#290)

Author: stainless-bot

bin/check-release-environment

@@ -6,9 +6,9 @@ if [ -z "${PYPI_TOKEN}" ]; then
   errors+=("The FINCH_PYPI_TOKEN secret has not been set. Please set it in either this repository's secrets or your organization secrets.")
 fi
 
-len=${#errors[@]}
+lenErrors=${#errors[@]}
 
-if [[ len -gt 0 ]]; then
+if [[ lenErrors -gt 0 ]]; then
   echo -e "Found the following errors in the release environment:\n"
 
   for error in "${errors[@]}"; do