docs(en): order the section alphabetically

[aryanrai2001]

Added links to missing documentation and rearranged the links in order to make it easier for contributors to add more documentation later down the line.
Issue #289

PR Checklist:

• My submission is formatted according to the guidelines in the contributing guide
• My addition is on refer on the language README.md file
• My addition does not have a spelling problem
• My submission has a proper and user-friendly description of the algorithm
• My submission has the time complexity of the algorithm
• My submission has sample input-output of the program (NOT FOR PYTHON)

What kind of change does this PR introduce? (check at least one)

• Bugfix
• New algorithm
• Optimization in previous algorithms
• Code style update
• Refactor
• Documentation
• Other, please describe:

Briefly describe the changes in this PR

Other information:

[welcome]

Thanks for opening this pull request! Please check out our contributing guidelines.

[welcome]

Congrats on merging your first pull request! We here at MakeContributions are proud of you! 🎉🎉🎉🎉.
You are invited to join the team on Github and Discord.