Minor updates to ML page

[jrbourbeau]

This PR has some minor changes (mostly all nits) to our recently added ML page

cc @mrocklin

[github-actions]

Unit Test Results

See test report for an extended history of previous test failures. This is useful for diagnosing flaky tests.

     15 files  ±0       15 suites  ±0   3h 21m 38s ⏱️ + 1m 47s
 13 123 tests ±0   12 169 ✅  - 21     931 💤 ±0  11 ❌ + 9  12 🔥 +12 
162 500 runs  +8  142 409 ✅  - 42  20 038 💤  - 1  31 ❌ +29  22 🔥 +22 

For more details on these failures and errors, see this check.

Results for commit 19772ab. ± Comparison against base commit cc1aad6.

[jrbourbeau]

I'm going to go ahead and merge this PR in so it gets into the release later today (xref dask/community#381). @mrocklin @scharlottej13 my guess is you'll both be okay with the changes here given their minor/nitpicky nature, but if that's not the case I'm happy address any comments you may have in a follow-up PR (sorry for rushing!)

Also, just wanted to note that the test failures here are unrelated to the changes in this PR and have been resolved over in #11131