[lldb] Fix typo in ScriptedProcess python docstrings (NFC)

Signed-off-by: Med Ismail Bennani <[email protected]>

Author: medismailben

lldb/examples/python/scripted_process/scripted_process.py

@@ -197,7 +197,7 @@ def get_process_metadata(self):
 
         Returns:
             Dict: A dictionary containing metadata for the scripted process.
-                  None is the process as no metadata.
+                  None if the process as no metadata.
         """
         return self.metadata
 
@@ -347,7 +347,7 @@ def get_extended_info(self):
 
         Returns:
             List: A list containing the extended information for the scripted process.
-                  None is the thread as no extended information.
+                  None if the thread as no extended information.
         """
         return self.extended_info