docs: updated the markup elements (#50586)

PR Close #50586

aio/content/examples/getting-started/src/app/top-bar/top-bar.component.1.html

@@ -3,5 +3,5 @@
 </a>
 
 <a class="button fancy-button">
-  <i class="material-icons">shopping_cart</i>Checkout
+  <em class="material-icons">shopping_cart</em>Checkout
 </a>

aio/content/examples/getting-started/src/app/top-bar/top-bar.component.html

@@ -4,6 +4,6 @@
 
 <!-- #docregion cart-route -->
 <a routerLink="/cart" class="button fancy-button">
-  <i class="material-icons">shopping_cart</i>Checkout
+  <em class="material-icons">shopping_cart</em>Checkout
 </a>
 <!-- #enddocregion cart-route -->

aio/src/app/shared/analytics.service.ts

@@ -12,7 +12,7 @@ interface WindowWithAnalytics extends Window {
   gtag?(...args: any[]): void;
   /** Legacy Universal Analytics `analytics.js` field. */
   ga?(...args: any[]): void;
-};
+}
 
 @Injectable()
 /**

aio/tools/transforms/templates/api/package.template.html

@@ -44,7 +44,7 @@
 
   <h2>{% if doc.isPrimaryPackage %}Primary entry{% else %}Entry{% endif %} point exports</h2>
   {% if not doc.hasPublicExports %}
-    <p><i>No public exports.</i></p>
+    <p><em>No public exports.</em></p>
   {% endif %}
   {% include "includes/deprecation.html" %}
   {$ listItems(doc.ngmodules, 'NgModules') $}

aio/tools/transforms/templates/overview-dump.template.html

@@ -1,6 +1,6 @@
 {% import "lib/githubLinks.html" as github -%}
 {% import "api/lib/memberHelpers.html" as members -%}
-{% macro goToCode(doc) %}<a href="{$ github.githubViewHref(doc, versionInfo) $}" class="go-to-code" title="Go to source code"><i class="material-icons" aria-hidden="true" role="img">code</i></a>{% endmacro %}
+{% macro goToCode(doc) %}<a href="{$ github.githubViewHref(doc, versionInfo) $}" class="go-to-code" title="Go to source code"><em class="material-icons" aria-hidden="true" role="img">code</em></a>{% endmacro %}
 {% macro label(test, class, text) %}{% if test %}<label class="{$ class $}">{$ text $}</label>{% endif %}{% endmacro %}
 {% macro renderLabels(doc) -%}
   {$ label(doc.notYetDocumented, 'no-doc', 'UNDOCUMENTED') $}