docs: fix some typos

Author: ghiscoding

packages/demo/src/getting-started.html

@@ -70,7 +70,7 @@ <h5>CSS / SASS Styling Themes</h5>
     <p>
       Load default or Bootstrap Theme style via either the <code>@use</code>(modern) or <code>@import</code>(legacy)
     </p>
-    1- with modern <code>@use</code>approach
+    1- with modern SASS <code>@use</code> approach
     <div style="background: #f7f7f7; padding: 10px">
       <pre>
   <span style="color:#cf222e">@use</span> <span style="color:#0a3069">'multiple-select-vanilla/dist/styles/sass/multiple-select.scss'</span> <span style="color:#cf222e">with</span> (
@@ -79,7 +79,7 @@ <h5>CSS / SASS Styling Themes</h5>
   );
 </pre>
     </div>
-    2- with legacy <code>@import</code>approach
+    2- with legacy SASS <code>@import</code> approach
     <div style="background: #f7f7f7; padding: 10px">
       <pre>
   <span style="color:#986801">$ms-primary-color</span>: red;