[mlir][func] Fix return op example

[marbre]

Similiar to #121112.

[llvmbot]

@llvm/pr-subscribers-mlir

@llvm/pr-subscribers-mlir-func

Author: Marius Brehler (marbre)

Changes

Similiar to #121112.

---

Full diff: https://github.com/llvm/llvm-project/pull/121470.diff

1 Files Affected:

• (modified) mlir/include/mlir/Dialect/Func/IR/FuncOps.td (+1-1)

diff --git a/mlir/include/mlir/Dialect/Func/IR/FuncOps.td b/mlir/include/mlir/Dialect/Func/IR/FuncOps.td
index 237a825c191042..211201802b08ce 100644
--- a/mlir/include/mlir/Dialect/Func/IR/FuncOps.td
+++ b/mlir/include/mlir/Dialect/Func/IR/FuncOps.td
@@ -352,7 +352,7 @@ def ReturnOp : Func_Op<"return", [Pure, HasParent<"FuncOp">,
     Example:
 
     ```mlir
-    func.func @foo() : (i32, f8) {
+    func.func @foo() -> (i32, f8) {
       ...
       return %0, %1 : i32, f8
     }