Add ORCID to social template and example

[WillMatthews]

ORCID is a commonly-used page for people in academia to track your publications and basically have a small CV on the internet. This PR contributes adding ORCID to the social partial template, and an example in the config.toml.

[WillMatthews]

A typo on the google scholar line was also corrected.

[lcnzg]

@kaapiandcode The ORCID icon is only available in Font Awesome release 5.11.0, and we are using 5.8.2. So, its not working.