solved style-lint errors

res/css/views/auth/_AuthHeader.scss

@@ -26,4 +26,4 @@ limitations under the License.
     .mx_AuthHeader {
         display: none;
     }
-}
+}

res/css/views/auth/_AuthHeaderLogo.scss

@@ -28,4 +28,4 @@ limitations under the License.
     .mx_AuthHeaderLogo {
         display: none;
     }
-}
+}

res/css/views/auth/_LanguageSelector.scss

@@ -28,4 +28,4 @@ limitations under the License.
 
 .mx_AuthBody_language .mx_Dropdown_arrow {
     background: $authpage-lang-color;
-}
+}

res/css/views/auth/_Welcome.scss

@@ -18,7 +18,6 @@ limitations under the License.
     display: flex;
     flex-direction: column;
     align-items: center;
-
     &.mx_WelcomePage_registrationDisabled {
         .mx_ButtonCreateAccount {
             display: none;