Supported versions documentation

[seanpearsonuk]

https://fluent.docs.pyansys.com/dev/getting_started/installation.html
"The ansys-fluent-core package supports Python 3.7 through Python 3.10 on Windows and Linux."

https://visualization.fluent.docs.pyansys.com/release/0.7/getting_started/index.html
"The ansys-fluent-visualization package supports Python 3.7 through Python 3.10 on Windows and Linux."

and similar in
https://parametric.fluent.docs.pyansys.com/release/0.7/getting_started/index.html

We should state that 3.8 through 3.11.

[hpohekar]

@seanpearsonuk

Visualization changes are implemented in this PR - ansys/pyfluent-visualization#263,

Nightly doc build is failing therefore it is not appearing in docs.

[seanpearsonuk]

ok, looks like there's a fix for the build in place. You many close this issue if the other parts are done