Update README.md instructions for installing V3 with Chocolatey

Given the recent decision to continue updating only the `azure-functions-core-tools` package on Chocolatey for subsequent releases, the instructions for installing Core Tools V3 via Chocolatey should be updated to include the `--version` parameter and appropriate argument.

This issue may also apply to documentation related to APT.

Start in README.md at the Core Tools V3 installation instructions for Chocolatey. Update the instructions to include the --version parameter and its appropriate argument, then check whether the related APT documentation needs the same treatment. Done means the V3 Chocolatey guidance reflects the current azure-functions-core-tools package decision and any applicable APT guidance is also addressed.

Written by the indexing model from the issue text.