Redirect if text query param missing

[ibidani]

Purpose

• Logs present the function default url as below, if user browse to it, they will get an error 500

Now listening on: http://0.0.0.0:7071
Application started. Press Ctrl+C to shut down.

Http Functions:

        sentiment: [GET,POST] http://localhost:7071/api/sentiment

Does this introduce a breaking change?

[ ] Yes
[x] No

Pull Request Type

What kind of change does this Pull Request introduce?

[ ] Bugfix
[x] Feature
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
[ ] Documentation content changes
[ ] Other... Please describe:

How to Test

• Browsing to the URL without text query param should redirect to URL with text=I+Love+PyCon

Other Information

[asw101]

Thank you @ibidani, I think this certainly adds to the usability of the lab!

[ibidani]

Thanks, tiny polish