Fix grammar

index.html

@@ -644,7 +644,7 @@ <h3>Block Content Delivery Networks with "Decentraleyes"</h3>
 <br>
 
 <div class="alert alert-warning" role="alert">
-    <strong>The following add-ons require quite a lot of interaction from user to get things working. Some sites will not work properly until you have configured the add-ons.</strong>
+    <strong>The following add-ons require quite a lot of interaction from the user to get things working. Some sites will not work properly until you have configured the add-ons.</strong>
 </div>
 <!--
 <h3>Stop cross-site requests with "Request Policy"</h3>
@@ -1179,7 +1179,7 @@ <h1 id="search" class="anchor"><a href="#search"><i class="fas fa-link anchor-ic
     title="StartPage"
     image="img/provider/StartPage.png"
     url="https://www.startpage.com/"
-    description="Google search results, with complete privacy protection. Behind StartPage is an european company that has been obsessive about privacy since 2006."
+    description="Google search results, with complete privacy protection. Behind StartPage is a european company that has been obsessive about privacy since 2006."
     %}
 
     {% include card.html color="warning"
@@ -1278,7 +1278,7 @@ <h3>Related Information</h3>
 
 <h1 id="voip" class="anchor"><a href="#voip"><i class="fas fa-link anchor-icon"></i></a> Encrypted Video & Voice Messenger</h1>
 <div class="alert alert-warning" role="alert">
-    <strong>If you are currently using an Video & Voice Messenger like Skype, Viber or Google Hangouts you should pick an alternative here.</strong>
+    <strong>If you are currently using a Video & Voice Messenger like Skype, Viber or Google Hangouts you should pick an alternative here.</strong>
 </div>
 <div class="row mb-2">
     {% include card.html color="success"