fixed a typo.

modules/ocl/perf/perf_moments.cpp

@@ -26,7 +26,7 @@
 //
 //   * Redistribution's in binary form must reproduce the above copyright notice,
 //     this list of conditions and the following disclaimer in the documentation
-//     and/or other oclMaterials provided with the distribution.
+//     and/or other Materials provided with the distribution.
 //
 //   * The name of the copyright holders may not be used to endorse or promote products
 //     derived from this software without specific prior written permission.