[benchmarking] Add win-laptop tag for expectations.config

In order to skip running some stories,  Benchmarking uses tags defined in typ_expectations.py to update expectations.config. Though, we don't have a tag to allow us stop running a story only on win-10_laptop_low_end-perf.

This CL adds a new tag win-laptop in expectations.config. The changes in catapult is in this CL: crrev.com/c/2351395.

Bug: chromium:1114681
Bug: chromium:1115156
Change-Id: Ia0c816d11b9434e20d1d06d4dca96678d379d643
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2353949Reviewed-by: Rakib Hasan <rmhasan@google.com>
Commit-Queue: Wenbin Zhang <wenbinzhang@google.com>
Cr-Commit-Position: refs/heads/master@{#798011}

tools/perf/expectations.config

 # Test Expectation file for telemetry tests.
 # Instructions of how to use this file:
 # https://chromium.googlesource.com/chromium/src/+/master/docs/speed/bot_health_sheriffing/how_to_disable_a_story.md
-# tags: [ android chromeos chromeos-local chromeos-remote linux mac mac-10.11 mac-10.12 win win10 win7 sierra highsierra
-#         android-marshmallow android-lollipop android-nougat android-oreo android-pie android-10
+# tags: [ android chromeos chromeos-local chromeos-remote linux mac mac-10.11 mac-10.12 win win10 win7 win-laptop
+#         sierra highsierra android-marshmallow android-lollipop android-nougat android-oreo android-pie android-10
 #         android-kitkat ubuntu ]
 # tags: [ android-go android-low-end android-nexus-5 android-nexus-5x android-nexus-6
 #         android-pixel-2 desktop mobile ]