added a "-" to indepth

site/content/blog/2020-10-01-whats-new-in-svelte-october-2020.md

@@ -12,7 +12,7 @@ Welcome to the first edition of our "What's new in Svelte" series! We'll try to
 2. `_` is now supported as a "numerical separator", similar to a `.` or `,` ([Example](https://svelte.dev/repl/844c39e91d1248649fe54af839fab570?version=3.26.0), **3.26.0**)
 3. `import.meta` now works in template expressions ([Example](https://svelte.dev/repl/9630de41957a4c80a4fce264360a6bc7?version=3.26.0), **3.26.0**)
 4. CSS Selectors with `~` and `+` combinators are now supported ([Example](https://svelte.dev/repl/91ad9257d2d1430185a504a18cc60172?version=3.29.0), **3.27.0**, with a compiler fix in **3.29.0**)
-5. The `{#key}` block is now available to key arbitrary content on an expression. Whever the expression changes, the contents inside the `{#key}` block will be destroyed and recreated. For an indepth explanation and to find out how it's implemented, check out the [new blog post](https://lihautan.com/contributing-to-svelte-implement-key-block/) of Svelte Team member Tan Li Hau. ([More info](https://github.com/sveltejs/svelte/issues/1469), **3.29.0**)
+5. The `{#key}` block is now available to key arbitrary content on an expression. Whever the expression changes, the contents inside the `{#key}` block will be destroyed and recreated. For an in-depth explanation and to find out how it's implemented, check out the [new blog post](https://lihautan.com/contributing-to-svelte-implement-key-block/) of Svelte Team member Tan Li Hau. ([More info](https://github.com/sveltejs/svelte/issues/1469), **3.29.0**)
 6. Slots can now be forwarded through child components! This used to only be possible by adding extra wrapper `<div>`s ([More info](https://github.com/sveltejs/svelte/issues/2079), **3.29.0**)
 7. When using TypeScript, you can now type the `createEventDispatcher` method:
 ```html