alphabetical reordering for airtable api

Added Airtable API under Documents & Productivity

Co-authored-by: Matheus Felipe <50463866+matheusfelipeog@users.noreply.github.com>

This service has entered the Sunset phase. On December 31, 2020, the Ticksel service reached the end of its useful life (“EOL”).

Ref 1: https://www.ticksel.com/
Ref 2: issue #1902 

resolve #1902

Add Stoicism Quote API to Personality

Added & improved Steam API

Add HackerOne API to Security

Add HackerOne API to Security

Update PULL_REQUEST_TEMPLATE.md

fixing the broken contributing guide link

Add Cors support column for EVA

Push Covalent API to Cryptocurrency

Reduced SGWeatherAPI description length

<!-- Thank you for taking the time to work on a Pull Request for this project! -->
<!-- To ensure your PR is dealt with swiftly please check the following: -->
- [X] My submission is formatted according to the guidelines in the [contributing guide](CONTRIBUTING.md)
- [X] My addition is ordered alphabetically
- [X] My submission has a useful description
- [X] The description does not end with punctuation
- [X] Each table column is padded with one space on either side
- [X] I have searched the repository for any relevant issues or pull requests
- [X] Any category I am creating has the minimum requirement of 3 items
- [X] All changes have been [squashed][squash-link] into a single commit

[squash-link]: <https://github.com/todotxt/todo.txt-android/wiki/Squash-All-Commits-Related-to-a-Single-Issue-into-a-Single-Commit>

Co-authored-by: Matheus Felipe <50463866+matheusfelipeog@users.noreply.github.com>

Co-authored-by: Matheus Felipe <50463866+matheusfelipeog@users.noreply.github.com>

Co-authored-by: Matheus Felipe <50463866+matheusfelipeog@users.noreply.github.com>

Add placebear API

Add official APOD API from NASA.

Although there is already an heroku based keyless unofficial APOD API. Here adding an offcial API which requires APIKey.

Add TCGdex

Signed-off-by: Florian BOUILLON <florian.bouillon@delta-wings.net>

HEP Inspire link update

Add Brazil API

Add Tyk and OpenAfrica APIs

Add openAFRICA API to Open Data