[Chapel Merge] Update spec procedures.rst operator overloading ta

Branch: refs/heads/master
Revision: ee16333
Author: lydia-duncan
Log Message:

Merge pull request #17352 from cassella/spec-overload-table

Update spec procedures.rst operator overloading table
[contributed by @cassella, reviewed by Lydia]

Remove unary &, which doesn't exist and isn't overridable.

Add # and align, which do and are.

Resolves #17337.

Modified Files:
M doc/rst/language/spec/procedures.rst

Compare: https://github.com/chapel-lang/chapel/compare/e8ad21e4d74d...ee16333c1afd