Add documentation about upload/download and fix markdown

[valyo]

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1. Description / Summary

Update documentation regarding adding upload/download at the end of the mount directory name

2. Jira task / GitHub issue

HMS-2090

3. Type of change

What type of change(s) does the PR contain?

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• New feature
  • Breaking: Why / How? Add info here.
  • Non-breaking
• Database change: Remember the to include a new migration version, or explain here why it's not needed.
• Bug fix
• Security Alert fix
  • Package update
    • Major version update
• Documentation
• Workflow
• Tests only

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  • I have followed steps 1-8.

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[rv0lt]

Ah thanks, here I can see the pytest error is ocurring as well xD

[i-oden]

Add a row in the sprintlog, but otherwise you can merge once you've updated the branch with alvaros test-changes.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 0.00%. Comparing base (7019097) to head (be3c9db).
Report is 10 commits behind head on dev.

Additional details and impacted files

@@     Coverage Diff     @@
##   dev   #1580   +/-   ##
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