Correct Portals monorail component in all OWNERS files.

Bug: 1134214
Change-Id: Ida7b374a939abaa76f95a8f9174c53601ec22b1e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2463716
Auto-Submit: Jeremy Roman <jbroman@chromium.org>
Commit-Queue: Lucas Gadani <lfg@chromium.org>
Reviewed-by: Lucas Gadani <lfg@chromium.org>
Cr-Commit-Position: refs/heads/master@{#816595}

chrome/browser/portal/OWNERS

 file://third_party/blink/renderer/core/html/portal/OWNERS
 
-# COMPONENT: Blink>HTML>Portal
+# COMPONENT: Blink>Portals

content/browser/portal/OWNERS

 file://third_party/blink/renderer/core/html/portal/OWNERS
 
-# COMPONENT: Blink>HTML>Portal
+# COMPONENT: Blink>Portals

content/test/portal/OWNERS

 file://third_party/blink/renderer/core/html/portal/OWNERS
 
-# COMPONENT: Blink>HTML>Portal
+# COMPONENT: Blink>Portals

third_party/blink/renderer/core/html/portal/OWNERS

@@ -3,4 +3,4 @@ jbroman@chromium.org
 lfg@chromium.org
 mcnee@chromium.org
 
-# COMPONENT: Blink>HTML>Portal
+# COMPONENT: Blink>Portals

third_party/blink/web_tests/external/wpt/portals/OWNERS

-# COMPONENT: Blink>HTML>Portal
+# COMPONENT: Blink>Portals
 # WPT-NOTIFY: true
 file://third_party/blink/renderer/core/html/portal/OWNERS

third_party/blink/web_tests/http/tests/portals/OWNERS

-# COMPONENT: Blink>HTML>Portal
+# COMPONENT: Blink>Portals