Changed to github.GitHub

As reported here - https://github.community/t5/GitHub-Learning-Lab/lab-writing-javascript-actions-error-github-Github-is-not-a/m-p/55862#M1363

Author: markharrison

responses/14_create-js-files.md

@@ -89,7 +89,7 @@ async function run() {
     const jokeBody = core.getInput("joke");
     const token = core.getInput("repo-token");
 
-    const octokit = new github.Github(token);
+    const octokit = new github.GitHub(token);
   } catch (err) {}
 }
 
@@ -106,7 +106,7 @@ async function run() {
     const jokeBody = core.getInput("joke");
     const token = core.getInput("repo-token");
 
-    const octokit = new github.Github(token);
+    const octokit = new github.GitHub(token);
 
     const newIssue = await octokit.issues.create({
         repo: github.context.repo.repo,
@@ -132,7 +132,7 @@ async function run() {
     const jokeBody = core.getInput("joke");
     const token = core.getInput("repo-token");
 
-    const octokit = new github.Github(token);
+    const octokit = new github.GitHub(token);
 
     const newIssue = await octokit.issues.create({
         repo: github.context.repo.repo,
@@ -141,7 +141,7 @@ async function run() {
         body; jokeBody
     });
   } catch (err) {
-      core.setFailed(error.message);
+      core.setFailed(err.message);
   }
 }