diff --git a/mlir/include/mlir/Dialect/Affine/IR/AffineOps.td b/mlir/include/mlir/Dialect/Affine/IR/AffineOps.td
--- a/mlir/include/mlir/Dialect/Affine/IR/AffineOps.td
+++ b/mlir/include/mlir/Dialect/Affine/IR/AffineOps.td
@@ -630,7 +630,7 @@
     Example (3x3 valid convolution):
 
     ```mlir
-    function @conv_2d(%D : memref<100x100xf32>, %K : memref<3x3xf32>) -> (memref<98x98xf32>) {
+    func @conv_2d(%D : memref<100x100xf32>, %K : memref<3x3xf32>) -> (memref<98x98xf32>) {
       %O = alloc memref<98x98xf32>
       affine.parallel (%x, %y) = (0, 0) to (98, 98) {
         %0 = affine.parallel (%kx, %ky) = (0, 0) to (2, 2) reduce ("addf") {