Updates to README.md (#3964)
Updates to README.md (#3964)

* updated V2 links to V3 links
Updated experimental and beta warnings (removed warning for tests are docs and docs are tests, changed warning for profilers to inline text as in Beta, rather than admonition box as experimental)
Updated link to Jupyter logo
Added "New deployment patterns" under "recent extensions" with GC and BigQuery, and Databricks as initial entries.

* Added Flyte to deployment patterns

We are two more coming in soon that I'll make sure to add when they are deployed.

Co-authored-by: Kyle Eaton <3c25b01657254677d3e1a8fd1f0742c5d489bd39@superconductivehealth.com>
great-expectations/great_expectations,great-expectations/great_expectations,great-expectations/great_expectations,great-expectations/great_expectations