[espace.h] fix comment

Change-Id: I5df28c0efcea3fc27f83cd0c3995d78bfe8828bb
Reviewed-on: https://gn-review.googlesource.com/c/gn/+/5121
Reviewed-by: Scott Graham <scottmg@chromium.org>
Commit-Queue: Scott Graham <scottmg@chromium.org>

tools/gn/escape.h

diff --git a/tools/gn/escape.h b/tools/gn/escape.h
index d59a8eb..bed2646 100644
--- a/tools/gn/escape.h
+++ b/tools/gn/escape.h
@@ -23,8 +23,8 @@
 
   // For writing preformatted shell commands to Ninja files. This assumes the
   // output already has the proper quoting and may include special shell
-  // shell characters which we want to pass to the shell (like when writing
-  // tool commands). Only Ninja "$" are escaped.
+  // characters which we want to pass to the shell (like when writing tool
+  // commands). Only Ninja "$" are escaped.
   ESCAPE_NINJA_PREFORMATTED_COMMAND,
 };