Raw Data API Improvement

[KafayatYusuf]

What type of PR is this?

Check all applicable

• 🍕 Feature
• 🐛 Bug Fix
• 📝 Documentation
• 🧑‍💻 Refactor
• ✅ Test
• 🤖 Build or CI
• ❓ Other (Correction of spelling errors and punctuation marks)

Related Issue:

• Corrects grammatical errors and punctuation in the markdown
• Removes trailing backslashes

What does this PR do?

• Removes trailing backslashes
• Updates API description
• Add googles docstrings to functions
• Add status response codes (200,400,403,404,408 & 500) to endpoints
• Corrects grammatical errors and punctuation in the Markdown
• Contributes to this issue [https://github.com/Enhance API documentation and examples hotosm/raw-data-api#219]

Consideration:

• Updating the description helps the user to understand what the API is all about
• Removing trailing backslashes help to keep a consistent format and avoid errors
• Status response codes help user to identify and know the responses to expect

How to test?

Visit the link below to access the API documentation
Raw Data API Documentation
ratemyopenapi

Screenshots:

Checklists:

Checklist before requesting review:

• 📖 Read the HOT Code of Conduct: https://docs.hotosm.org/code-of-conduct
• 👷‍♀️ Create small PRs. In most cases, this will be possible.
• ✅ Provide tests for your changes.
• 📝 Use descriptive commit messages.
• 📗 Update any related documentation and include any relevant screenshots.

[optional] What gif best describes this PR or how it makes you feel?