Update configure-extension-file-exclusions-microsoft-defender-antivirus.md

Adding clearer information around this. This seems to be correct from reading the rest of the document

Author: andrewjohnporter

defender-endpoint/configure-extension-file-exclusions-microsoft-defender-antivirus.md

@@ -57,7 +57,7 @@ The following table lists some examples of exclusions based on file extension an
 |Exclusion|Examples|Exclusion list|
 |---|---|---|
 |Any file with a specific extension|All files with the specified extension, anywhere on the machine. <br/><br/> Valid syntax: `.test` and `test`|Extension exclusions|
-|Any file under a specific folder|All files under the `c:\test\sample` folder|File and folder exclusions|
+|Any file or folder under a specific folder|All files and folders under the `c:\test\sample` folder|File and folder exclusions|
 |A specific file in a specific folder|The file `c:\sample\sample.test` only|File and folder exclusions|
 |A specific process|The executable file `c:\test\process.exe`|File and folder exclusions|