Update ami_spreadsheet_overview.md

Add brief zip file path example

docs/ami_spreadsheet_overview.md

@@ -20,6 +20,9 @@ There are multiple ways a spreadsheet/CSV file can be structured to work with AM
             `s3://myAMIuploads/myAMIdocument.pdf`
         - Example remote filepath:
             `https://dogsaregreat.edu/dogs.tiff`
+        - Example zip filepath:
+            `dogs.tiff` (no need for a leading /)        
+
     - **Multiple files (of the same type) can be placed in a single cell, separated by a semicolon ( ; ).**
     - For Digital Objects comprised of multiple types of files, such as an Oral History Interview with an audio file and a PDF transcript file, you can place different file types within different corresponding columns for the same Row.
     - It is recommended that filepaths are copied/stored as plain (non-hyperlinked) formatted text.