IOS unittests fix UISupportedInterfaceOrientations typo

Change-Id: I2ca6df4452e375d4f381d4b015f877fa99d16e36
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2400985Reviewed-by: Dirk Pranke <dpranke@google.com>
Reviewed-by: Mark Cogan <marq@chromium.org>
Commit-Queue: Olivier Robin <olivierrobin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#805693}

ios/chrome/test/unittest-scene-lifecycle-Info.plist

@@ -129,7 +129,7 @@
 			<string>{768, 1024}</string>
 		</dict>
 	</array>
-	<key>UISupportedInterfaceOrientation</key>
+	<key>UISupportedInterfaceOrientations</key>
 	<array>
 		<string>UIInterfaceOrientationPortrait</string>
 		<string>UIInterfaceOrientationLandscapeLeft</string>

testing/gtest_ios/unittest-Info.plist

@@ -129,7 +129,7 @@
 			<string>{768, 1024}</string>
 		</dict>
 	</array>
-	<key>UISupportedInterfaceOrientation</key>
+	<key>UISupportedInterfaceOrientations</key>
 	<array>
 		<string>UIInterfaceOrientationPortrait</string>
 		<string>UIInterfaceOrientationLandscapeLeft</string>