Welcome: fix `create Account` typo

Change-Id: I0b5e94d230364bef2cb9e581729534f8766d4e8a
diff --git a/core/installer/welcome/create-account.html b/core/installer/welcome/create-account.html
index f95ca55..05429a8 100644
--- a/core/installer/welcome/create-account.html
+++ b/core/installer/welcome/create-account.html
@@ -40,7 +40,7 @@
                     secret token
                     <input type="text" name="secret-token" aria-label="Secret Token" value="{{ .Data.SecretToken }}" required/>
                 </label>
-                <button type="submit">create Account</button>
+                <button type="submit">create account</button>
             </form>
         </div>
     </main>