content/contributor-workshop.article: fix a couple of typos

One of them is a misformatting.

Change-Id: I07fee028573865829c71f5124ec791cf286c65d2
Reviewed-on: https://go-review.googlesource.com/54510
Reviewed-by: Avelino <t@avelino.xxx>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
diff --git a/content/contributor-workshop.article b/content/contributor-workshop.article
index 92ca8e1..c0834ab 100644
--- a/content/contributor-workshop.article
+++ b/content/contributor-workshop.article
@@ -61,7 +61,7 @@
 identified that our documentation was significantly lacking examples. In the
 presentation, we asked users to find a package they loved and to add an example. In
 the Go project, examples are written as code in Go files
-(with specific naming) and the `go doc` tool displays them along side the documentation.
+(with specific naming) and the `go`doc` tool displays them along side the documentation.
 This is a perfect first contribution as it's something that can be merged
 during a freeze, it's of critical importance to our users, and it's an addition
 that has a relatively narrow scope.
@@ -150,7 +150,7 @@
 
 .image contributor-workshop/image7.png
 
-Seeing your name pop up on the board and listening to everyone's excited was
+Seeing your name pop up on the board and listening to everyone's excitement was
 intoxicating. It also invoked a sense of teamwork that lead to a feeling of
 inclusion and feeling like you were truly a part of the Go community.