gn docs: Add a missing closing paren.

BUG=none

Review-Url: https://codereview.chromium.org/2852443002
Cr-Original-Commit-Position: refs/heads/master@{#467724}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: dd1ae15f741af316df1aefc7df74aa4427839250
diff --git a/tools/gn/docs/reference.md b/tools/gn/docs/reference.md
index 4b88f55..735e5f9 100644
--- a/tools/gn/docs/reference.md
+++ b/tools/gn/docs/reference.md
@@ -4941,7 +4941,7 @@
   via the "check" command (see "gn help check").
 
   If no public files are declared, other targets (assuming they have visibility
-  to depend on this target can include any file in the sources list. If this
+  to depend on this target) can include any file in the sources list. If this
   variable is defined on a target, dependent targets may only include files on
   this whitelist.
 
diff --git a/tools/gn/variables.cc b/tools/gn/variables.cc
index 66460e9..d304bc5 100644
--- a/tools/gn/variables.cc
+++ b/tools/gn/variables.cc
@@ -1552,7 +1552,7 @@
   via the "check" command (see "gn help check").
 
   If no public files are declared, other targets (assuming they have visibility
-  to depend on this target can include any file in the sources list. If this
+  to depend on this target) can include any file in the sources list. If this
   variable is defined on a target, dependent targets may only include files on
   this whitelist.