Workflows: fix mdlint for test-all-scream action

Author: bartgol

.github/actions/test-all-scream/README.md

@@ -18,15 +18,16 @@ jobs:
 The input run_type is the only input that this action has to explicitly handle.
 As such, this action checks that its value is one of the following.
 
- - nightly: runs tests and then submit to cdash
- - at-run: runs tests without submitting to cdash
- - bless: runs tests and copy output files to baselines folder
+- nightly: runs tests and then submit to cdash
+- at-run: runs tests without submitting to cdash
+- bless: runs tests and copy output files to baselines folder
 
 As for build_type and machine, we do not prescribe a list of
 valid values, as that will be handled by components/eamxx/scripts/test-all-scream.
 If their values are not supported, it is up to test-all-scram to handle the error.
 As a guideline, however, you may have to ensure that the following exist:
- - the file components/eamxx/cmake/machine-files/${machine}.cmake
- - the entry ${machine} in the MACHINE_METADATA dict in components/eamxx/scripts/machine_specs.py
+
+- the file components/eamxx/cmake/machine-files/${machine}.cmake
+- the entry ${machine} in the MACHINE_METADATA dict in components/eamxx/scripts/machine_specs.py
 
  Questions? Contact Luca Bertagna (lbertag@sandia.gov)