CONTRIBUTING.md: remove note about not accepting Pull Requests

Updates golang/go#24185

Change-Id: I10753a1e9829a7b2f74c3e9bade62f8a1d4ef9e1
Reviewed-on: https://go-review.googlesource.com/100682
Reviewed-by: Ian Lance Taylor <iant@golang.org>
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index f4ddb84..0b3a27f 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -4,20 +4,15 @@
 [file an issue](https://github.com/golang/gddo/issues/new).
 before starting work on anything major.
 
-**We do not accept GitHub pull requests**
-(we use [an instance](https://go-review.googlesource.com/) of the
-[Gerrit](https://www.gerritcodereview.com/) code review system instead).
-
 To get started contributing to this project,
 clone the repository from its canonical location
 
-	git clone https://go.googlesource.com/gddo
+    git clone https://go.googlesource.com/gddo
 
 or update the `origin` of your existing clone
 
-	git remote rm origin
-	git remote add origin https://go.googlesource.com/gddo
+    git remote rm origin
+    git remote add origin https://go.googlesource.com/gddo
 
 then read the [Contribution Guidelines](https://golang.org/doc/contribute.html)
 to learn how to send patches using Gerrit.
-
diff --git a/README.markdown b/README.markdown
index 7194f4c..7fadcb2 100644
--- a/README.markdown
+++ b/README.markdown
@@ -19,8 +19,6 @@
 issue](https://github.com/golang/gddo/issues/new). before starting work on
 anything major.
 
-**We do not accept GitHub pull requests**
-
 Please refer to the [Contribution
 Guidelines](https://golang.org/doc/contribute.html) on how to submit changes.