Fix - yaml invalid string

[ludogayet]

Hi,

I'm having an error when i try using the module and following the ReadMe. (dbt 1.3.0, tnightengale/dbt_meta_testing 0.3.6)
dbt run-operation required_docs --args "{'models': '$(dbt list -m state:modified --state ../../config/)'}"
Produce :
09:27:48 Running with dbt=1.3.0
09:27:48 The YAML provided in the --vars argument is not valid.
09:27:48 Encountered an error while running operation: Runtime Error unacceptable character #x001b: special characters are not allowed in "<unicode string>", position 12

I think the right way of calling it is, based on what i understand from the dbt doc is :
dbt run-operation required_docs --args '{models: $(dbt list -m state:modified --state ../../config/)}'
And this time i get normal output
09:27:06 Running with dbt=1.3.0
09:27:07 Checking required_docs config...
09:27:07 Success: required_docs passed.

[tnorlund-dsc]

Agreed. This is how I've applied args/vars in the past.