Bug 835896 - Update inspector search string for better localization practice;r=flod

browser/locales/en-US/chrome/browser/devtools/inspector.properties

@@ -74,10 +74,10 @@ inspector.collapsePane=Collapse pane
 inspector.expandPane=Expand pane
 
 # LOCALIZATION NOTE (inspector.searchResultsCount): This is the label that
-# will show up next to the inspector search box showing the current result
-# index alongside the total number of search results.  For example, "3 of 9".
+# will show up next to the inspector search box. %1$S is the current result
+# index and %2$S is the total number of search results. For example: "3 of 9".
 # This won't be visible until the search box is updated in Bug 835896.
-inspector.searchResultsCount=%S of %S
+inspector.searchResultsCount2=%1$S of %2$S
 
 # LOCALIZATION NOTE (inspector.searchResultsNone): This is the label that
 # will show up next to the inspector search box when no matches were found