add missing i18n tag in login form (#3628)

client/src/app/+login/login.component.html

@@ -44,7 +44,7 @@
           <input type="submit" i18n-value value="Login" [disabled]="!form.valid">
 
           <div class="additionnal-links">
-            <a class="forgot-password-button" (click)="openForgotPasswordModal()" i18n-title title="Click here to reset your password">I forgot my password</a>
+            <a i18n class="forgot-password-button" (click)="openForgotPasswordModal()" i18n-title title="Click here to reset your password">I forgot my password</a>
             <div *ngIf="signupAllowed" class="signup-link">
               <span>·</span>
               <a i18n routerLink="/signup" class="create-an-account">Create an account</a>