Comment typofix: "inidicator" -> "indicator"

Signed-off-by: Marko Lindqvist <cazfi74@gmail.com>

common/aicore/citymap.c

@@ -36,11 +36,11 @@
 /* CITYMAP - reserve space for cities
  *
  * The citymap is a large int double array that corresponds to
- * the freeciv main map. For each tile, it stores three different 
+ * the freeciv main map. For each tile, it stores three different
  * and exclusive values in a single int: A positive int tells you
- * how many cities can use this tile (a crowdedness inidicator). A 
- * value of zero indicates that the tile is presently unused and 
- * available. A negative value means that this tile is occupied 
+ * how many cities can use this tile (a crowdedness indicator).
+ * A value of zero indicates that the tile is presently unused and
+ * available. A negative value means that this tile is occupied
  * and reserved by some city or unit: in this case the value gives
  * the negative of the ID of the city or unit that has reserved the
  * tile.