Fix typos in docs and docstrings (GH-13745)

diff --git a/Lib/pyclbr.py b/Lib/pyclbr.py
index 8fd0523..99a1734 100644
--- a/Lib/pyclbr.py
+++ b/Lib/pyclbr.py
@@ -50,7 +50,7 @@
 
 
 class _Object:
-    "Informaton about Python class or function."
+    "Information about Python class or function."
     def __init__(self, module, name, file, lineno, parent):
         self.module = module
         self.name = name