Updated Python Extension description to add Jupyter Notebook support

[jmew]

For #

• Pull request represents a single change (i.e. not fixing disparate/unrelated things in a single PR)
• Title summarizes what is changing
• Has a news entry file (remember to thank yourself!)
• Appropriate comments and documentation strings in the code
• Has sufficient logging.
• Has telemetry for enhancements.
• Unit tests & system/integration tests are added/updated
• Test plan is updated as appropriate
• package-lock.json has been regenerated by running npm install (if dependencies have changed)
• The wiki is updated with any design decisions/details.

[codecov-io]

Codecov Report

Merging #8545 into master will increase coverage by 0.5%.
The diff coverage is n/a.

@@            Coverage Diff            @@
##           master    #8545     +/-   ##
=========================================
+ Coverage    58.7%   59.21%   +0.5%     
=========================================
  Files         511      521     +10     
  Lines       23306    25020   +1714     
  Branches     3824     4178    +354     
=========================================
+ Hits        13682    14815   +1133     
- Misses       8705     9261    +556     
- Partials      919      944     +25

Impacted Files	Coverage Δ
...client/datascience/jupyter/jupyterServerFactory.ts	21.15% <0%> (-11.11%)	⬇️
...datascience/jupyter/liveshare/hostJupyterServer.ts	11.4% <0%> (-4.65%)	⬇️
...tascience/jupyter/liveshare/hostJupyterNotebook.ts	7.56% <0%> (-2.84%)	⬇️
src/client/datascience/jupyter/jupyterNotebook.ts	6.22% <0%> (-0.04%)	⬇️
...t/datascience/jupyter/jupyterDataRateLimitError.ts	100% <0%> (ø)	⬆️
src/client/formatters/serviceRegistry.ts	100% <0%> (ø)	⬆️
...lient/datascience/jupyter/jupyterSelfCertsError.ts	100% <0%> (ø)	⬆️
src/client/providers/terminalProvider.ts	100% <0%> (ø)	⬆️
src/client/debugger/extension/serviceRegistry.ts	100% <0%> (ø)	⬆️
...ience/jupyter/jupyterDebuggerRemoteNotSupported.ts	100% <0%> (ø)	⬆️
... and 61 more

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