extraInfo: minor CSS fix for RTL languages

Bug: twpowertools:17
Change-Id: I9798f23a80b5c4c5c9b704e527659043ec5f31a3
diff --git a/src/static/css/extrainfo.css b/src/static/css/extrainfo.css
index b3e3a8f..eeb8694 100644
--- a/src/static/css/extrainfo.css
+++ b/src/static/css/extrainfo.css
@@ -81,7 +81,8 @@
 ec-question .TWPT-extrainfo-chip .TWPT-chip-content-container,
     ec-message .footer .TWPT-extrainfo-chip .TWPT-chip-content-container,
     ec-thread-summary .main .toolbelt .TWPT-extrainfo-chip .TWPT-chip-content-container {
-  margin: 0 10px 0 6px;
+  margin-block: 0;
+  margin-inline: 6px 10px;
 }
 
 ec-message .footer .TWPT-extrainfo-container {