Corrected typo

README.md

@@ -83,7 +83,7 @@ Refer to the wiki for more information on input parameters and use cases
 ### 7. Custom metadata validation and custom BioSample package
 
 TOSTADAS defaults to Pathogen.cl.1.0 (Pathogen: clinical or host-associated; version 1.0) NCBI BioSample package for submissions to the BioSample repository. You can submit using a different BioSample package by doing the following:
-1. Change the package name in the `conf/submission_config.yamlsubmissions`. Choose one of the available [NCBI BioSample packages](https://www.ncbi.nlm.nih.gov/biosample/docs/packages/). 
+1. Change the package name in the `conf/submission_config.yaml`. Choose one of the available [NCBI BioSample packages](https://www.ncbi.nlm.nih.gov/biosample/docs/packages/). 
 2. Add the necessary fields for your BioSample package to your input Excel file.
 3. Add those fields as keys to the JSON file (`assets/custom_meta_fields/example_custom_fields.json`) and provide key info as needed.
     replace_empty_with: TOSTADAS will replace any empty cells with this value (Example application: NCBI expects some value for any mandatory field, so if empty you may want to change it to "Not Provided".)