chore: updating link to newer viz plugin blog post

[rusackas]

SUMMARY

Updating to the newer link, which is more relevant for the current monorepo situation

BEFORE/AFTER SCREENSHOTS OR ANIMATED GIF

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

[rusackas]

@villebro I just noticed this link... but it might be worth a look to see if there are more things worth updating in contributing now that we're (finally) a monorepo

[codecov]

Codecov Report

Merging #18707 (990f2f7) into master (225015f) will decrease coverage by 0.02%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master   #18707      +/-   ##
==========================================
- Coverage   66.28%   66.25%   -0.03%     
==========================================
  Files        1605     1605              
  Lines       62863    62863              
  Branches     6341     6341              
==========================================
- Hits        41666    41650      -16     
- Misses      19545    19561      +16     
  Partials     1652     1652              

Flag	Coverage Δ
hive	52.14% <ø> (ø)
javascript	51.28% <ø> (ø)
mysql	81.33% <ø> (ø)
postgres	?
presto	51.98% <ø> (ø)
python	81.76% <ø> (-0.06%)	⬇️
sqlite	81.06% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
superset/sql_validators/postgres.py	50.00% <0.00%> (-50.00%)	⬇️
superset/reports/commands/log_prune.py	85.71% <0.00%> (-3.58%)	⬇️
superset/commands/importers/v1/utils.py	89.13% <0.00%> (-2.18%)	⬇️
superset/db_engine_specs/postgres.py	95.45% <0.00%> (-1.82%)	⬇️
superset/common/query_object.py	95.08% <0.00%> (-0.55%)	⬇️
superset/views/base_api.py	97.47% <0.00%> (-0.43%)	⬇️
superset/reports/commands/execute.py	91.14% <0.00%> (-0.37%)	⬇️

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[villebro]

We now have official docs for this - should we link to the docs or maybe both? https://superset.apache.org/docs/contributing/creating-viz-plugins

[villebro]

LGTM 🚀