ACP2E-3864: Update copyrights for PB and fix static failures

Author: aplapana

app/code/Magento/PageBuilder/view/adminhtml/web/css/source/_buttons.less

@@ -1,7 +1,7 @@
 // /**
-// * Copyright 2018 Adobe
-// * All Rights Reserved.
-// */
+//  * Copyright 2018 Adobe
+//  * All Rights Reserved.
+//  */
 
 //
 //  _buttons contains less for generic buttons
@@ -16,8 +16,7 @@
     .lib-link-as-button();
     .lib-button-primary(@_button-margin: @pagebuilder-button__margin);
     .lib-button-l(
-        @_button-l-font-size: @pagebuilder-button__font-size,
-        @_button-l-height: @pagebuilder-button__line-height
+        @_button-l-font-size: @pagebuilder-button__font-size, @_button-l-height: @pagebuilder-button__line-height
     );
     .lib-css(border-radius, @button__border-radius);
     .lib-css(font-weight, @font-weight__semibold);

app/code/Magento/PageBuilder/view/adminhtml/web/css/source/_common.less

@@ -1,7 +1,7 @@
 // /**
-// * Copyright 2018 Adobe
-// * All Rights Reserved.
-// */
+//  * Copyright 2018 Adobe
+//  * All Rights Reserved.
+//  */
 
 //
 //  _common contains core classes used throughout the PageBuilder admin