Updated username for inclusivity

Signed-off-by: Kroosh Crusius <[email protected]>

src-docs/src/views/header/header_sections.js

@@ -61,7 +61,7 @@ export default () => {
   );
   const renderUser = (
     <OuiHeaderSectionItemButton disabled aria-label="Account menu">
-      <OuiAvatar isDisabled name="J. Username" size="s" />
+      <OuiAvatar isDisabled name="A. User" size="s" />
     </OuiHeaderSectionItemButton>
   );