cmd/guru: change "Method set:" to less formal "Methods:"

Change-Id: I7a43f3e9ed7e88f4f8f09d4d112c81aa037b7d8d
Reviewed-on: https://go-review.googlesource.com/21111
Reviewed-by: Michael Matloob <matloob@golang.org>

cmd/guru/describe.go

@@ -25,7 +25,7 @@ import (
 // including:
 // - its syntactic category
 // - the definition of its referent (for identifiers) [now redundant]
-// - its type and method set (for an expression or type expression)
+// - its type, fields, and methods (for an expression or type expression)
 //
 func describe(q *Query) error {
 	lconf := loader.Config{Build: q.Build}
@@ -479,7 +479,7 @@ type describeField struct {
 
 func printMethods(printf printfFunc, node ast.Node, methods []*types.Selection) {
 	if len(methods) > 0 {
-		printf(node, "Method set:")
+		printf(node, "Methods:")
 	}
 	for _, meth := range methods {
 		// Print the method type relative to the package

cmd/guru/testdata/src/describe/main.golden

@@ -64,7 +64,7 @@ defined here
 -------- @describe type-D --------
 reference to type D (size 24, align 8)
 defined as struct{Field int; AnotherField string}
-Method set:
+Methods:
 	method (D) f()
 Fields:
 	Field        int
@@ -73,7 +73,7 @@ Fields:
 -------- @describe type-I --------
 reference to type I (size 16, align 8)
 defined as interface{f()}
-Method set:
+Methods:
 	method (I) f()
 
 -------- @describe func-ref-d.f --------
@@ -86,7 +86,7 @@ defined here
 
 -------- @describe ptr-with-nonptr-methods --------
 definition of var dptr *D
-Method set:
+Methods:
 	method (*D) f()
 Fields:
 	Field        int
@@ -95,7 +95,7 @@ Fields:
 -------- @describe ref-lexical-d --------
 reference to var d D
 defined here
-Method set:
+Methods:
 	method (D) f()
 Fields:
 	Field        int
@@ -127,19 +127,19 @@ defined here
 -------- @describe var-ref-i-C --------
 reference to var i I
 defined here
-Method set:
+Methods:
 	method (I) f()
 
 -------- @describe var-ref-i-D --------
 reference to var i I
 defined here
-Method set:
+Methods:
 	method (I) f()
 
 -------- @describe var-ref-i --------
 reference to var i I
 defined here
-Method set:
+Methods:
 	method (I) f()
 
 -------- @describe const-local-pi --------
@@ -210,7 +210,7 @@ function call (or conversion) of type invalid type
 
 -------- @describe def-iface-I --------
 definition of type I (size 16, align 8)
-Method set:
+Methods:
 	method (I) f()
 
 -------- @describe def-imethod-I.f --------

cmd/guru/testdata/src/imports/main.golden

@@ -33,7 +33,7 @@ defined here
 -------- @describe ref-type --------
 reference to type lib.Type (size 8, align 8)
 defined as int
-Method set:
+Methods:
 	method (Type) Method(x *int) *int
 
 -------- @describe ref-method --------