fix grammer

Author: zen8841

ejs/index.ejs

@@ -7,7 +7,7 @@
 <%- include("header", { title: "首頁" }); -%>
 
   <section class="intro">
-    <div class="background-words">Who Are Us</div>
+    <div class="background-words">Who Are We</div>
     <div class="we-intro">Software Engineers, <br />Developers, Hackers, <br />Adventurers ... @NCKU</div>
     <div class="contact-line">
       <div class="line"></div>