Quick Proofread

[gordonwatts]

These changes are the result of a quick proofread of the documentation pages. Major changes:

• Fixed up bad servicex.yaml file
• Added some func_adl information in query_types
• Fixed up the contributions guide so it isn't talking about microservices any longer.

And lots of minor changes as well.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 82.75%. Comparing base (cf19258) to head (d6ed4a9). Report is 1 commits behind head on 3.0_develop.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## 3.0_develop #472 +/- ## ============================================ Coverage 82.75% 82.75% ============================================ Files 26 26 Lines 1386 1386 ============================================ Hits 1147 1147 Misses 239 239 ``` | [Flag](https://app.codecov.io/gh/ssl-hep/ServiceX_frontend/pull/472/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=ssl-hep) | Coverage Δ | | |---|---|---| | [unittests](https://app.codecov.io/gh/ssl-hep/ServiceX_frontend/pull/472/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=ssl-hep) | `82.75% <ø> (ø)` | | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=ssl-hep#carryforward-flags-in-the-pull-request-comment) to find out more.

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[gordonwatts]

Thanks for the review, @ketan96-m - I'll merge this with 3.0 now!