Merge pull request #134 from pnorman/patch-3

Fix typo in config

Author: jburgess777

mod_tile.conf

@@ -122,7 +122,7 @@ ModTileCacheDurationLowZoom 9 518400
 ModTileCacheLastModifiedFactor 0.20
 
 ## Tile Throttling
-## Tile scrappers can often download large numbers of tiles and overly straining tileserver resources
+## Tile scrapers can often download large numbers of tiles and overly straining tileserver resources
 ## mod_tile therefore offers the ability to automatically throttle requests from ip addresses that have
 ## requested a lot of tiles.
 ## The mechanism uses a token bucket approach to shape traffic. I.e. there is an initial pool of n tiles