Fix external-location 'lists' command

[adamcain-db]

• Correct unity-catalog external-locations lists -> external-locations list CLI

[codecov-commenter]

Codecov Report

Merging #503 (2ac3c94) into main (0e4c869) will not change coverage.
The diff coverage is 0.00%.

@@           Coverage Diff           @@
##             main     #503   +/-   ##
=======================================
  Coverage   61.10%   61.10%           
=======================================
  Files          55       55           
  Lines        4664     4664           
=======================================
  Hits         2850     2850           
  Misses       1814     1814           

Impacted Files	Coverage Δ
databricks_cli/unity_catalog/ext_loc_cli.py	0.00% <0.00%> (ø)

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[pietern]

Thanks for fixing!