Add more entries to the glossary.

Written by Jeff Wheeler for GHOP.
diff --git a/Doc/library/inspect.rst b/Doc/library/inspect.rst
index 2c8041d..fbc9d04 100644
--- a/Doc/library/inspect.rst
+++ b/Doc/library/inspect.rst
@@ -235,7 +235,7 @@
 
 .. function:: isfunction(object)
 
-   Return true if the object is a Python function or unnamed (lambda) function.
+   Return true if the object is a Python function or unnamed (:term:`lambda`) function.
 
 
 .. function:: istraceback(object)