Fix typo in error message of maps example

Change-Id: Icd89aea969921ee2a5e6949a4f045ae7439dd618
Reviewed-by: Jüri Valdmann <juri.valdmann@qt.io>

examples/webenginewidgets/maps/maps.pro

@@ -12,6 +12,6 @@ target.path = $$[QT_INSTALL_EXAMPLES]/webenginewidgets/maps
 INSTALLS += target
 
 !qtConfig(webengine-geolocation) {
-    error('Qt WebEngine compiled without geolocaton support, this example will not work.')
+    error('Qt WebEngine compiled without geolocation support, this example will not work.')
 }