fix: replace deprecated --terragrunt-hclfmt-file flag (#125)

Author: gnuletik

hooks/terragrunt-hclfmt.sh

@@ -9,6 +9,6 @@ export PATH=$PATH:/usr/local/bin
 
 for file in "$@"; do
   pushd "$(dirname "$file")" >/dev/null
-  terragrunt hclfmt --terragrunt-hclfmt-file "$(basename "$file")"
+  terragrunt hclfmt --file "$(basename "$file")"
   popd >/dev/null
 done