fix publish issue

package/recipes/validation.md

@@ -0,0 +1,49 @@
+## Validation
+
+tRPC works out-of-the-box with yup/superstruct/zod/myzod/custom validators.
+
+### Input Validation
+
+```ts
+// ~/server/trpc/index.ts
+import { z } from 'zod'
+
+export const router = trpc
+  .router()
+  .mutation('createUser', {
+    // validate input with Zod
+    input: z.object({
+      name: z.string().min(5)
+    }),
+    async resolve(req) {
+      // use your ORM of choice
+      return await UserModel.create({
+        data: req.input,
+      })
+    },
+  })
+```
+
+### Output Validation
+
+```ts
+// ~/server/trpc/index.ts
+import { z } from 'zod'
+
+export const router = trpc
+  .router()
+  .query('hello', {
+    // validate output with Zod
+    output: z.object({
+      greeting: z.string()
+    }),
+    // expects return type of { greeting: string }
+    resolve() {
+      return {
+        greeting: 'hello!',
+      }
+    },
+  })
+```
+
+Learn more about input validation [here](https://trpc.io/docs/router#input-validation).