go/types: clarify documentation

For a discussion, see the issue.

Fixes #35189.

Change-Id: I46c87a45bddf2ea8c33bc101d58880b7922e0f78
Reviewed-on: https://go-review.googlesource.com/c/go/+/204044
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>

src/go/types/scope.go

@@ -77,7 +77,7 @@ func (s *Scope) Lookup(name string) Object {
 //
 // Note that obj.Parent() may be different from the returned scope if the
 // object was inserted into the scope and already had a parent at that
-// time (see Insert, below). This can only happen for dot-imported objects
+// time (see Insert). This can only happen for dot-imported objects
 // whose scope is the scope of the package that exported them.
 func (s *Scope) LookupParent(name string, pos token.Pos) (*Scope, Object) {
 	for ; s != nil; s = s.parent {

src/go/types/selection.go

@@ -31,11 +31,11 @@ const (
 //
 // the following relations exist:
 //
-//	Selector    Kind          Recv    Obj    Type               Index     Indirect
+//	Selector    Kind          Recv    Obj    Type       Index     Indirect
 //
-//	p.x         FieldVal      T       x      int                {0}       true
-//	p.m         MethodVal     *T      m      func (e *T) m()    {1, 0}    true
-//	T.m         MethodExpr    T       m      func m(_ T)        {1, 0}    false
+//	p.x         FieldVal      T       x      int        {0}       true
+//	p.m         MethodVal     *T      m      func()     {1, 0}    true
+//	T.m         MethodExpr    T       m      func(T)    {1, 0}    false
 //
 type Selection struct {
 	kind     SelectionKind