gh-145526: Update typing.rst for type alias assignment syntax

[hyperkai]

Fix: #145526

• Issue: Type aliases section should use the specifc term "assignment statement" instead of the abstract term "simple assignment" #145526

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📚 Documentation preview 📚: https://cpython-previews--145527.org.readthedocs.build/

[JelleZijlstra]

This is not an augmented assignment. Augmented assignment refers to e.g. +=.

[AlexWaygood]

I don't find this an improvement. The existing text seems clear to me, and I don't think a link to the language reference is necessary here.

[hyperkai]

I don't find this an improvement. The existing text seems clear to me, and I don't think a link to the language reference is necessary here.

Simple statement includes more than 10 statements, like expression statement, assignment statement, assert statement, pass statement, return statement, etc.

So, specifying it as assignment statement is better but up to you and if you don't like the link, I'll remove it, leaving just the text "assignment statement".

[AlexWaygood]

The docs here are using the common English meaning of the adjective "simple". "Simple assignment" isn't a term of art here that needs to be validated against precise definitions in the language reference. The docs are just talking about assignments that are simple.

[AlexWaygood]

Thanks for the PR, but we'll decline this one :-)