Fix typo for IPH_TabGroupsQuicklyComparePages

Bug: 930970
Change-Id: I46e78e8639ce34f51afeeecafbaf4d1062e08bd3
Reviewed-on: https://chromium-review.googlesource.com/c/1492365Reviewed-by: Yusuf Ozuysal <yusufo@chromium.org>
Reviewed-by: Tommy Nyquist <nyquist@chromium.org>
Commit-Queue: Wei-Yin Chen (陳威尹) <wychen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#636266}

components/feature_engagement/public/feature_list.h

@@ -77,7 +77,7 @@ DEFINE_VARIATION_PARAM(kIPHHomepageTileFeature, "IPH_HomepageTile");
 DEFINE_VARIATION_PARAM(kIPHNewTabPageButtonFeature, "IPH_NewTabPageButton");
 DEFINE_VARIATION_PARAM(kIPHPreviewsOmniboxUIFeature, "IPH_PreviewsOmniboxUI");
 DEFINE_VARIATION_PARAM(kIPHTabGroupsQuicklyComparePagesFeature,
-                       "IPH_IPH_TabGroupsQuicklyComparePages");
+                       "IPH_TabGroupsQuicklyComparePages");
 DEFINE_VARIATION_PARAM(kIPHTabGroupsTapToSeeAnotherTabFeature,
                        "IPH_TabGroupsTapToSeeAnotherTab");
 DEFINE_VARIATION_PARAM(kIPHTabGroupsYourTabsAreTogetherFeature,