(docs) update --shallow description

Fixes #2895
Signed-off-by: lf32 <96695352+lf32@users.noreply.github.com>

Author: lf32

docs/source/tutorials/how_to_run_a_scan.rst

@@ -36,7 +36,7 @@ This extracts the zlib.tar.gz package:
 
 .. note::
 
-    ``--shallow`` option can be used to recursively extract packages.
+    Use the ``--shallow`` option to prevent recursive extraction of nested archives.
 
 
 Deciding Scan Options