gotypes: fix links

Change-Id: I76d62337854429b2e66b56bfc5f11d6a3d3892b2
Reviewed-on: https://go-review.googlesource.com/22012
Reviewed-by: Alan Donovan <adonovan@google.com>
diff --git a/gotypes/README.md b/gotypes/README.md
index 79d6c26..0437b3f 100644
--- a/gotypes/README.md
+++ b/gotypes/README.md
@@ -274,7 +274,7 @@
 [_objects_](#objects) declared at package level.
 `Imports` returns the set of packages directly imported by this
 one, and  may be useful for computing dependencies
-([Initialization Order](#initialization_order)).
+([Initialization Order](#initialization-order)).
 
 
 
@@ -1275,7 +1275,7 @@
 in the order they were declared.
 However, due to the subtleties of anonymous fields and the difference
 between value and pointer receivers, a named type may have more or fewer
-methods than this list.  We'll return to this in [Method Sets](#method_sets).
+methods than this list.  We'll return to this in [Method Sets](#method-sets).
 
 
 
@@ -2507,7 +2507,7 @@
 
 To map **from an `ast.Ident` to the `Object`** it refers to (or
 declares), consult the `Uses` or `Defs` map for the
-package, as shown in [Identifier Resolution](#identifier_resolution).
+package, as shown in [Identifier Resolution](#identifier-resolution).
 
 
 
diff --git a/gotypes/go-types.md b/gotypes/go-types.md
index b20784c..07ee3e3 100644
--- a/gotypes/go-types.md
+++ b/gotypes/go-types.md
@@ -191,7 +191,7 @@
 [_objects_](#objects) declared at package level.
 `Imports` returns the set of packages directly imported by this
 one, and  may be useful for computing dependencies
-([Initialization Order](#initialization_order)).
+([Initialization Order](#initialization-order)).
 
 
 
@@ -1094,7 +1094,7 @@
 in the order they were declared.
 However, due to the subtleties of anonymous fields and the difference
 between value and pointer receivers, a named type may have more or fewer
-methods than this list.  We'll return to this in [Method Sets](#method_sets).
+methods than this list.  We'll return to this in [Method Sets](#method-sets).
 
 
 
@@ -2012,7 +2012,7 @@
 
 To map **from an `ast.Ident` to the `Object`** it refers to (or
 declares), consult the `Uses` or `Defs` map for the
-package, as shown in [Identifier Resolution](#identifier_resolution).
+package, as shown in [Identifier Resolution](#identifier-resolution).