fix: typo in arg name for terraform-docs (#283)

README.md

@@ -329,7 +329,7 @@ Unlike most other hooks, this hook triggers once if there are any changed files
     - id: terraform_docs
       args:
         - --hook-config=--path-to-file=README.md        # Valid UNIX path. I.e. ../TFDOC.md or docs/README.md etc.
-        - --hook-config=--add-to-exiting-file=true      # Boolean. true or false
+        - --hook-config=--add-to-existing-file=true     # Boolean. true or false
         - --hook-config=--create-file-if-not-exist=true # Boolean. true or false
     ```
 

terraform_docs.sh

@@ -119,7 +119,7 @@ terraform_docs() {
   # Get hook settings
   #
   local text_file="README.md"
-  local add_to_exiting=false
+  local add_to_existing=false
   local create_if_not_exist=false
 
   configs=($hook_config)
@@ -132,8 +132,8 @@ terraform_docs() {
       --path-to-file)
         text_file=$value
         ;;
-      --add-to-exiting-file)
-        add_to_exiting=$value
+      --add-to-existing-file)
+        add_to_existing=$value
         ;;
       --create-file-if-not-exist)
         create_if_not_exist=$value
@@ -171,10 +171,10 @@ terraform_docs() {
     [[ ! -f "$text_file" ]] && popd > /dev/null && continue
 
     #
-    # If `--add-to-exiting-file=true` set, check is in file exist "hook markers",
+    # If `--add-to-existing-file=true` set, check is in file exist "hook markers",
     # and if not - append "hook markers" to the end of file.
     #
-    if $add_to_exiting; then
+    if $add_to_existing; then
       HAVE_MARKER=$(grep -o '<!-- BEGINNING OF PRE-COMMIT-TERRAFORM DOCS HOOK -->' "$text_file" || exit 0)
 
       if [ ! "$HAVE_MARKER" ]; then