Fix typos

Signed-off-by: Tushar Goel <tushar.goel.dav@gmail.com>

Author: TG1999

src/fetchcode/pypi.py

@@ -23,7 +23,7 @@
 
 class Pypi:
     """
-    This class handles Cargo PURLs.
+    This class handles Pypi PURLs.
     """
 
     purl_pattern = "pkg:pypi/.*"