Test file missing (as per README)

[NISH1001]

Describe the bug

While running the command mentioned in the README ▶ python pyQuARC/main.py --file "tests/fixtures/test_cmr_metadata.echo10", the test file test_cmr_metadata.echo10 doesn't exist in the tests/fixtures directory.

To Reproduce
Steps to reproduce the behavior:

1. Setup pyQuARC from scratch in a venv
2. Run the command ▶ python pyQuARC/main.py --file "tests/fixtures/test_cmr_metadata.echo10"

Expected behavior
Expected to at least throw some output running the pyQuARC

Question: Can I run other test files through pyQuARC?

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cc: @slesaad @xhagrg

[slesaad]

Need to update the README, but try

python pyQuARC/main.py --file "tests/fixtures/test_cmr_metadata.echo-c"

The files have been renamed, but apparently the README not updated!

[smk0033]

@xhagrg I can update the readme for this, I see the lines with .echo10 that can be updated to echo-c instead