Fix call to test a webhook method

[morrislaptop]

See renamed URL in the note at https://docs.github.com/en/rest/reference/repos#test-the-push-repository-webhook

Using old URL gives an error "Resource not accessible by integration"

[GrahamCampbell]

Interesting. Are you calling this from a "GitHub app" or an "OAuth app". Do you know what version of GitHub Enterprise supports the new endpoint. Changing this could break things for those users.

[morrislaptop]

The result was the same for both GithubApp and oAuth App. I don’t have GitHub enterprise so can’t comment on that.

…

On Sun, 2 Aug 2020 at 22:35, Graham Campbell ***@***.***> wrote: Interesting. Are you calling this from a "GitHub app" or an "OAuth app". Do you know what version of GitHub Enterprise supports the new endpoint. Changing this could break things for those users. — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#915 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAAQRX75VNYKQ72J3OQVX4LR6XL3DANCNFSM4PSU4EIA> .

[acrobat]

I think we can safely apply this change, as in the github enterprise 2.18 docs the endpoint url is also like the note indicates

{
   "/repos/{owner}/{repo}/hooks/{hook_id}/tests":{
      "post":{
         "summary":"Test the push repository webhook",
         "description":"This will trigger the hook with the latest push to the current repository if the hook is subscribed to `push` events. If the hook is not subscribed to `push` events, the server will respond with 204 but no test POST will be generated.\n\n**Note**: Previously `/repos/:owner/:repo/hooks/:hook_id/test`",
         "tags":[
            "repos"
         ],
         "operationId":"repos/test-push-webhook",
         "externalDocs":{
            "description":"API method documentation",
            "url":"https://developer.github.com/enterprise/2.18/v3/repos/hooks/#test-the-push-repository-webhook"
         },
         "parameters":[
            {
               "$ref":"#/components/parameters/owner"
            },
            {
               "$ref":"#/components/parameters/repo"
            },
            {
               "$ref":"#/components/parameters/hook-id"
            }
         ],
         "responses":{
            "204":{
               "description":"Empty response"
            },
            "404":{
               "$ref":"#/components/responses/not_found"
            }
         },
         "x-github":{
            "githubCloudOnly":false,
            "enabledForGitHubApps":true,
            "previews":[

            ]
         }
      }
   }
}

https://github.com/github/rest-api-description/blob/main/descriptions/ghes-2.18/ghes-2.18.json

What do you think @GrahamCampbell?

[acrobat]

Thanks @morrislaptop! And congrats on your first contribution! 🎉