Update to the commits.md, more details about how to use the --form method for creating a commit

doc/api/commits.md

@@ -155,6 +155,32 @@ Example response:
 }
 ```
 
+GitLab supports [form encoding](../README.md#encoding-api-parameters-of-array-and-hash-types). The following is an example using Commit API with form encoding:
+
+```bash
+curl --request POST \
+     --form "branch=master" \
+     --form "commit_message=some commit message" \
+     --form "start_branch=master" \
+     --form "actions[][action]=create" \ 
+     --form "actions[][file_path]=foo/bar" \ 
+     --form "actions[][content]=</path/to/local.file" \ 
+     --form "actions[][action]=delete" \ 
+     --form "actions[][file_path]=foo/bar2" \ 
+     --form "actions[][action]=move" \ 
+     --form "actions[][file_path]=foo/bar3" \ 
+     --form "actions[][previous_path]=foo/bar4" \ 
+     --form "actions[][content]=</path/to/local1.file" \ 
+     --form "actions[][action]=update" \ 
+     --form "actions[][file_path]=foo/bar5" \
+     --form "actions[][content]=</path/to/local2.file" \ 
+     --form "actions[][action]=chmod" \ 
+     --form "actions[][file_path]=foo/bar5" \
+     --form "actions[][execute_filemode]=true" \ 
+     --header "PRIVATE-TOKEN: <your_access_token>" \
+     "https://gitlab.example.com/api/v4/projects/1/repository/commits"
+```
+
 ## Get a single commit
 
 Get a specific commit identified by the commit hash or name of a branch or tag.