Fix links in contributing.md and add code of conduct to siteNav

[nbriannl]

What is the purpose of this pull request? (put "X" next to an item, remove the rest)

• [X] Documentation update
• [X] Bug fix

What is the rationale for this request?

Preview in #1139 showed correctly, but links are broken in actual site.

What changes did you make? (Give an overview)

Comparing the output resolved href in the deployed site code,
https://github.com/MarkBind/devdocs/blob/a43131f3fed86576c821e1a92696ece77b1768f3/devGuide/contributing.html#L61

I can conclude
{{baseUrl}}/devGuide/contributing/code-of-conduct.html resolved correctly to
/devdocs/devGuide/contributing/code-of-conduct.html

The reason why the code-of-conduct page was broken was because I forgot to configure docs/dg-site.json, hence it wasn't generated in the deployed site.

I incorrectly used baseurl instead of baseUrl. (This error did not show up in netifly and was not caught by anyone). Changed it accordingly. I believe that the rest of the links should now resolve correctly as well.

Provide some example code that this change will affect:

Is there anything you'd like reviewers to focus on?

Testing instructions:

Compare broken links in https://markbind.org/devdocs/devGuide/contributing.html, and see if the corresponding links send to the correct pages

Proposed commit message: (wrap lines at 72 characters)

Fix contributing.md links, update siteNav

Fix baseurl to baseUrl and added Code of Conduct to siteNav

[nbriannl]

Can't seem to link to code-of-conduct even though it shows up on netifly https://deploy-preview-1170--markbind-master.netlify.com/devguide/contributing/code-of-conduct ... 😞

https://markbind.org/devdocs/devGuide/devGuide.html#requirement
https://markbind.org/devdocs/devGuide/contributing/code-of-conduct.html (wouldn't this be correct?)

Given this structure?

Update: I forgot to update docs\dg-site.json

[nbriannl]

Edit: Resolved. Spelt baseUrl as baseurl

I don't really understand why docs\_markbind\layouts\devGuide\navigation.md

<navigation>

<span class="lead">**Developer Guide**</span>

* [Developer Guide]({{baseUrl}}/devGuide/devGuide.html)
* [Maintainer Guide]({{baseUrl}}/devGuide/maintainerGuide.html)
* [Contributing]({{baseUrl}}/devGuide/contributing.html)

</navigation>

Can resolve with baseUrl === '/devdocs'

But any links present in docs\devGuide\contributing.md

Resolves with baseUrl === ''

[le0tan]

Looks like code of conduct is accessible only from direct URL access of clicing the link in "Contributing" page. Would is be better if code of conduct is shown on the left navigation? Otherwise LGTM.

[nbriannl]

Looks like code of conduct is accessible only from direct URL access of clicing the link in "Contributing" page. Would is be better if code of conduct is shown on the left navigation? Otherwise LGTM.

Think i'll leave this as a good first issue for any newcomer this summer.

Edit: After thinking about, i think it's better to just do a quick change since i'm already here

[ang-zeyu]

LGTM 👍

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commit message title needs to be under 50 characters though @nbriannl

[nbriannl]

commit message title needs to be under 50 characters though @nbriannl

Oh. My bad.