Fix a typo in the RouteBoxer docs.

1.0/docs/examples.html

@@ -29,7 +29,7 @@ <h1>RouteBoxer</h1>
 to support implementing Search along a route against a Spatial db that supports bounding box queries.</p>
 
 <p>Note that it is not the intention of the class to limit the bounding boxes to <b>only</b> those regions within the specified distance of the route, which
-is not impossible given that routes are not rectangular. Consequently searches performed using these bounding boxes may return results up to ~3x the
+is not possible given that routes are not rectangular. Consequently searches performed using these bounding boxes may return results up to ~3x the
 given distance from the route (twice the distance across the diagonal of a square with sides of the given distance).</p>
 
 <h2>How to use the class</h2>