content: correct grammar in package-names.article

Just a small reordering of words.

Change-Id: I6443583e93ea0d0c451564d9bb0ca8efeed96b10
GitHub-Last-Rev: f50b51a54a11df9509bca20d9466e73da9d75977
GitHub-Pull-Request: golang/blog#35
Reviewed-on: https://go-review.googlesource.com/c/blog/+/233677
Reviewed-by: Ian Lance Taylor <iant@golang.org>
diff --git a/content/package-names.article b/content/package-names.article
index befef60..48c0eb6 100644
--- a/content/package-names.article
+++ b/content/package-names.article
@@ -140,7 +140,7 @@
 about the terminology and structure of packages.)
 
 **Directories.**
-The standard library uses like directories `crypto`, `container`, `encoding`,
+The standard library uses directories like `crypto`, `container`, `encoding`,
 and `image` to group packages for related protocols and algorithms.
 There is no actual relationship among the packages in one of these directories;
 a directory just provides a way to arrange the files.