Update README.md

Author: m-mohr

README.md

@@ -348,16 +348,20 @@ Planetary Computer uses the same signed URL pattern described above. Here is an
   }
 }
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+
 ### Simple S3 authentication
-To use simple S3 authentication one has to set some environmental variables with S3 credentials:
 
-```AWS_SECRET_ACCESS_KEY```
-```AWS_ACCESS_KEY_ID```
+To use simple S3 authentication one has to set some environmental variables with S3 credentials:
 
-or to specify:
+- `AWS_SECRET_ACCESS_KEY`
+- `AWS_ACCESS_KEY_ID`
 
-[user profile](https://docs.aws.amazon.com/cli/v1/userguide/cli-configure-files.html#cli-configure-files-format) with a proper reference to ```AWS_PROFILE``` in the file ```AWS_CONFIG_FILE```. For more info please visit [GDAL vsis3 documentation](https://gdal.org/en/latest/user/virtual_file_systems.html#vsis3-aws-s3-files). 
+**or** specify a [user profile](https://docs.aws.amazon.com/cli/v1/userguide/cli-configure-files.html#cli-configure-files-format)
+with a proper reference to `AWS_PROFILE` in the file `AWS_CONFIG_FILE`.
 
+For more information please see either
+[GDAL vsis3](https://gdal.org/en/latest/user/virtual_file_systems.html#vsis3-aws-s3-files) or
+[AWS CLI](https://docs.aws.amazon.com/cli/v1/userguide/cli-configure-files.html) documentation. 
 
 ## Contributing