test(mat-table-benchmark): correct html file name (#20513)

(cherry picked from commit e75c4e6)

Author: wagnermaciel

test/benchmarks/material/table/BUILD.bazel

@@ -9,7 +9,7 @@ component_benchmark(
         "@npm//@types/jasmine",
     ],
     ng_assets = [
-        ":app.module.html",
+        ":table-app.html",
         ":basic-table.html",
     ],
     ng_deps = [

test/benchmarks/material/table/app.module.ts

@@ -20,7 +20,7 @@ import {
 // tslint:disable:max-line-length
 @Component({
   selector: 'app-root',
-  templateUrl: './app.module.html',
+  templateUrl: './table-app.html',
   encapsulation: ViewEncapsulation.None,
   styleUrls: ['//src/material/core/theming/prebuilt/indigo-pink.css'],
 })