fix login button label

templates/login_page.html

@@ -12,7 +12,7 @@
     <input type="text" name="username" id="username" minlength="1" maxlength="20" required></br>
     <label for="password">Password</label>
     <input type="password" name="password" id="password" required></br>
-    <input type="submit" value="Signup">
+    <input type="submit" value="Login">
 </form>
 </p>