chore(docs): Updating DB connection instructions in 1st Dash instruct…

[rusackas]

…ions

SUMMARY

The docs for connecting to a DB in the "Creating Your First Dashboard" section were out of date. This PR updates the instructions a bit, and adds updated screenshots.

BEFORE/AFTER SCREENSHOTS OR ANIMATED GIF

Before:

After:

TESTING INSTRUCTIONS

ADDITIONAL INFORMATION

• Has associated issue:
• Required feature flags:
• Changes UI
• Includes DB Migration (follow approval process in SIP-59)
  • Migration is atomic, supports rollback & is backwards-compatible
  • Confirm DB migration upgrade and downgrade tested
  • Runtime estimates and downtime expectations provided
• Introduces new feature or API
• Removes existing feature or API

[codecov]

Codecov Report

Merging #24081 (8c44076) into master (58e1bcd) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master   #24081   +/-   ##
=======================================
  Coverage   68.25%   68.25%           
=======================================
  Files        1942     1942           
  Lines       75192    75192           
  Branches     8145     8145           
=======================================
  Hits        51322    51322           
  Misses      21785    21785           
  Partials     2085     2085           

Flag	Coverage Δ
hive	53.19% <ø> (ø)
mysql	78.96% <ø> (ø)
postgres	79.03% <ø> (ø)
presto	53.12% <ø> (ø)
python	82.83% <ø> (ø)
sqlite	77.55% <ø> (ø)
unit	53.11% <ø> (ø)

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[rusackas]

@sfirke @kikobarr @eschutho here's the PR from today's lil' session, for your consideration.

[eschutho]

Looks great!