[geometry] Correct pointlike_tag name in a comment

[SVN r86145]

include/boost/geometry/core/tag_cast.hpp

@@ -25,7 +25,7 @@ namespace boost { namespace geometry
 \brief Metafunction defining a type being either the specified tag, or one
     of the specified basetags if the type inherits from them.
 \details Tags can inherit each other. A multi_point inherits, for example,
-    both the multi_tag and the pointlike tag. Often behaviour can be shared
+    both the multi_tag and the pointlike_tag. Often behaviour can be shared
     between different geometry types. A tag, found by the metafunction tag,
     can be casted to a more basic tag, and then dispatched by that tag.
 \ingroup core