Fix 1111 (#1113)

Author: Jimmy Chu

docs/knowledgebase/integrate/try-runtime.md

@@ -40,28 +40,35 @@ In order to query state, `try-runtime` makes use of Substrate's RPCs, namely [`S
 
 The most common use case for `try-runtime` is with storage migrations and runtime upgrades. 
 
-> **Tip:** Combine `try-runtime` with `fork-off-substrate` to test your chain before production. Use `try-runtime` to test your 
-> chain's migration and its pre and post states. Then, use [`fork-off-substrate`][fork-off-gh] if you want to check that block 
-> production continues fine after the migration, and do some other arbitrary testing. 
+> **Tip:** Combine `try-runtime` with [`fork-off-substrate`][fork-off-gh] to test your chain before
+> production. Use `try-runtime` to test your chain's migration and its pre and post states. Then,
+> use `fork-off-substrate` if you want to check that block production continues fine after the
+> migration, and do some other arbitrary testing.
 
 ### Calling into hooks from `OnRuntimeUpgrade`
+
 By default, there are two ways of defining a runtime upgrade in the runtime. The `OnRuntimeUpgrade` trait provides the [different methods][onruntimeupgrade-method-rustdocs] to achieve this.
 
 - **From inside a runtime**. For example:
     ```rust
     struct Custom;
     impl OnRuntimeUpgrade for Custom {
-        fn on_runtime_upgrade() -> Weight { }
+        fn on_runtime_upgrade() -> Weight {
+            // -- snip --
+        }
     }
     ```
 
 - **From inside a pallet**. For example:
     ```rust
     #[pallet::hooks]
-    fn on_runtime_upgrade() -> Weight { }
+    impl<T: Config> Hooks<BlockNumberFor<T>> for Pallet<T> {
+        fn on_runtime_upgrade() -> Weight {
+            // -- snip --
+        }
+    }
     ```
 
-
 These hooks will specify _what should happen upon a runtime upgrade_. For testing purposes, we prefer having hooks that allow us to inspect the state _before_ and _after_ a runtime upgrade as well. 
 
 These hooks are not available by default, and are only available under a specific feature flag, named `try-runtime`.