Update cl_img_matrix_multiply.asciidoc

Adding execution results to the coding samples

extensions/cl_img_matrix_multiply.asciidoc

@@ -257,6 +257,12 @@ float2 res = img_dot_interleaved_acc(a, &b, acc);
 printf("res = [ %f %f ]\n", res.s0, res.s1);
 ----
 
+Executing a work-item containing this code gives the following result:
+[source]
+----
+res = [ 1.000000 5.000000 ]
+----
+
 This coding sample shows how to initialize the input vectors, use the *img_matmul_acc_2x4_4x4f* function, and access the output vector:
 [source]
 ----
@@ -278,6 +284,13 @@ printf("res = [ %f %f %f %f ]\n", res.s0, res.s1, res.s2, res.s3);
 printf("      [ %f %f %f %f ]\n", res.s4, res.s5, res.s6, res.s7);
 ----
 
+Executing a work-item containing this code gives the following result:
+[source]
+----
+res = [ 1.000000 2.000000 3.000000 4.000000 ]
+      [ 5.000000 6.000000 7.000000 8.000000 ]
+----
+
 == Version History
 
 [cols="5,15,15,70"]