docs: github setup and hosting fixes

docs/setting up your GitHub repository.md

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+---
+title: Setting up your GitHub repository
+---
+
+First, make sure you have Quartz [[index#🪴 Get Started|cloned and setup locally]].
+
+Then, create a new repository on GitHub.com. Do **not** initialize the new repository with `README`, license, or `gitignore` files.
+
+![[github-init-repo-options.png]]
+
+At the top of your repository on GitHub.com's Quick Setup page, click the clipboard to copy the remote repository URL.
+
+![[github-quick-setup.png]]
+
+In your terminal of choice, navigate to the root of your Quartz folder. Then, run the following command, replacing `REMOTE-URL` with the URL you just copied from the previous step.
+
+```bash
+git remote add origin REMOTE-URL
+```
+
+To verify that you set the remote URL correctly, run the following command.
+
+```bash
+git remote -v
+```
+
+Then, you can sync the content to upload it to your repository.
+
+```bash
+npx quartz sync
+```