fix minor tempo in 'hypot' docstring

[tristanreid]

What changes were proposed in this pull request?

Minor typo: docstring for pyspark.sql.functions: hypot has extra characters

How was this patch tested?

N/A

[AmplabJenkins]

Can one of the admins verify this patch?

[andrewor14]

Merged into master.

[srowen]

That's entirely fine, but I note that some people intentionally write ^2^ instead of ^2 (not me). You can see both occurrences throughout the code base. Ideally we'd standardize rather than flip one to the other in one case.

[tristanreid]

Oh interesting, I hadn't noticed that. Wonder if it has significance for typesetting or something, like:
x^i+1^
I'll do some research on this - If there's no technical reason to prefer it and if you're amenable I'll grep for the other occurrences and standardize?

[srowen]

I don't recognize the syntax either, and it's not LaTeX. I don't think it's worth standardizing. For whatever reason I see people write this frequently.