docs: fix 1.0.0 README images (v2)

[dpgaspar]

SUMMARY

Followup fix from #12664 since symbolic links don't work, adding files has a copy now

ADDITIONAL INFORMATION

• Has associated issue:
• Changes UI
• Requires DB Migration.
• Confirm DB Migration upgrade and downgrade tested.
• Introduces new feature or API
• Removes existing feature or API

[codecov-io]

Codecov Report

Merging #12792 (7d0ff61) into master (044d1ae) will decrease coverage by 3.59%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master   #12792      +/-   ##
==========================================
- Coverage   67.00%   63.40%   -3.60%     
==========================================
  Files        1022      488     -534     
  Lines       50047    30115   -19932     
  Branches     4914        0    -4914     
==========================================
- Hits        33533    19095   -14438     
+ Misses      16390    11020    -5370     
+ Partials      124        0     -124     

Flag	Coverage Δ
cypress	?
javascript	?
python	63.40% <ø> (-0.68%)	⬇️

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

Impacted Files	Coverage Δ
superset/db_engines/hive.py	0.00% <0.00%> (-85.72%)	⬇️
superset/sql_validators/postgres.py	50.00% <0.00%> (-50.00%)	⬇️
superset/db_engine_specs/hive.py	73.84% <0.00%> (-17.31%)	⬇️
superset/databases/commands/create.py	83.67% <0.00%> (-8.17%)	⬇️
superset/databases/commands/update.py	85.71% <0.00%> (-8.17%)	⬇️
superset/connectors/sqla/models.py	84.31% <0.00%> (-6.28%)	⬇️
superset/db_engine_specs/sqlite.py	90.62% <0.00%> (-6.25%)	⬇️
superset/databases/commands/test_connection.py	84.78% <0.00%> (-4.35%)	⬇️
superset/utils/celery.py	96.42% <0.00%> (-3.58%)	⬇️
superset/models/core.py	85.59% <0.00%> (-3.27%)	⬇️
... and 545 more

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