bpo-35566: Add links to annotation glossary term (GH-11291)

diff --git a/Doc/reference/compound_stmts.rst b/Doc/reference/compound_stmts.rst
index a83b561..42fa864 100644
--- a/Doc/reference/compound_stmts.rst
+++ b/Doc/reference/compound_stmts.rst
@@ -571,8 +571,8 @@
    single: ->; function annotations
    single: : (colon); function annotations
 
-Parameters may have annotations of the form "``: expression``" following the
-parameter name.  Any parameter may have an annotation even those of the form
+Parameters may have an :term:`annotation <function annotation>` of the form "``: expression``"
+following the parameter name.  Any parameter may have an annotation, even those of the form
 ``*identifier`` or ``**identifier``.  Functions may have "return" annotation of
 the form "``-> expression``" after the parameter list.  These annotations can be
 any valid Python expression.  The presence of annotations does not change the
diff --git a/Doc/reference/simple_stmts.rst b/Doc/reference/simple_stmts.rst
index 0efbe1c..00964af 100644
--- a/Doc/reference/simple_stmts.rst
+++ b/Doc/reference/simple_stmts.rst
@@ -325,8 +325,8 @@
    single: statement; assignment, annotated
    single: : (colon); annotated variable
 
-Annotation assignment is the combination, in a single statement,
-of a variable or attribute annotation and an optional assignment statement:
+:term:`Annotation <variable annotation>` assignment is the combination, in a single
+statement, of a variable or attribute annotation and an optional assignment statement:
 
 .. productionlist::
    annotated_assignment_stmt: `augtarget` ":" `expression` ["=" `expression`]