Fix typos in client application workflow

Author: lukpueh

tuf-spec.md

@@ -1472,14 +1472,14 @@ it in the next step.
     1. Let DELEGATE denote the current target role TARGETS is
        delegating to.
 
-    2. **Download the DELEGATE tarets metadata file**, up to either
+    2. **Download the DELEGATE targets metadata file**, up to either
        the number of bytes specified in the snapshot metadata file, or some Z
        number of bytes. The value for Z is set by the authors of the application
        using TUF. For example, Z may be tens of kilobytes. IF DELEGATE cannot be
        found, end the search and report the target cannot be found.  If
        consistent snapshots are not used (see Section 7), then the filename used
        to download the targets metadata file is of the fixed form FILENAME.EXT
-       (e.g., delegated_rol.json).  Otherwise, the filename is of the form
+       (e.g., delegated_role.json).  Otherwise, the filename is of the form
        VERSION_NUMBER.FILENAME.EXT (e.g., 42.delegated_role.json), where
        VERSION_NUMBER is the version number of the DELEGATE metadata file listed
        in the snapshot metadata file.  In either case, the client MUST write the