_content/blog: fix typo

Change-Id: Id5d5b34dbad33ee3c669b0aef9dad738ae9dc99e
Reviewed-on: https://go-review.googlesource.com/c/website/+/474076
Run-TryBot: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Carlos Amedee <carlos@golang.org>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
diff --git a/_content/blog/first-go-program.md b/_content/blog/first-go-program.md
index 3407898..981bfed 100644
--- a/_content/blog/first-go-program.md
+++ b/_content/blog/first-go-program.md
@@ -23,7 +23,7 @@
 What follows is the first Go program. It was written by Rob in February 2008,
 when the team was just Rob, Robert, and Ken. They had a solid feature list
 (mentioned in [this blog post](https://commandcenter.blogspot.com.au/2012/06/less-is-exponentially-more.html))
-and a rough language specfication. Ken had just finished the first working version of
+and a rough language specification. Ken had just finished the first working version of
 a Go compiler (it didn't produce native code, but rather transliterated Go code
 to C for fast prototyping) and it was time to try writing a program with it.