Fix a typo in comment.

Change-Id: I6d6704beaeec441a2848ce9c53e9faa6df79fdee
Reviewed-on: https://chromium-review.googlesource.com/c/1336919Reviewed-by: Takuto Ikuta <tikuta@chromium.org>
Commit-Queue: Takuto Ikuta <tikuta@chromium.org>
Cr-Commit-Position: refs/heads/master@{#608218}

build/config/win/BUILD.gn

@@ -91,7 +91,7 @@ config("compiler") {
     if (is_component_build) {
       cflags += [
         # Do not export inline member functions. This makes component builds
-        # faster. This is similar to -fviisibility-inlines-hidden.
+        # faster. This is similar to -fvisibility-inlines-hidden.
         "/Zc:dllexportInlines-",
       ]
     }