fix 404 links on ecosystem

Author: flexbox

challenges/ecosystem/01.md

@@ -59,7 +59,7 @@ Example:
 ... paste an example result here
 ```
 
-Feel free to copy/paste some [React Native snippets from this list](https://davidl.fr/pattern).
+Feel free to copy/paste some [React Native snippets from this list](https://davidl.fr/snippets).
 
 ### React Native Snippets
 
@@ -69,7 +69,7 @@ Feel free to copy/paste some [React Native snippets from this list](https://davi
 code --install-extension dsznajder.es7-react-js-snippets
 ```
 
-- [ ] On your new `cheatcodes.md` write down [React Native components shortcuts](https://github.com/dsznajder/vs code-es7-javascript-react-snippets#react-native-components) you prefer (_Are you a `const` or a `function` person?_)
+- [ ] On your new `cheatcodes.md` write down [React Native components shortcuts](https://github.com/r5n-dev/vscode-react-javascript-snippets/blob/master/docs/Snippets.md#react-native-components) you prefer (_Are you a `const` or a `function` person?_).
 
 **🔭 Hint:** Using `ts` before `rn**` wil automatically add typescript definitions 🚀
 
@@ -81,9 +81,9 @@ code --install-extension dsznajder.es7-react-js-snippets
 code --install-extension nathanchapman.javascriptsnippets
 ```
 
-- [ ] add 3 [JavaScripts Snippets](https://github.com/nathanchapman/vs code-javascript-snippets) to your `cheatcodes.md`.
+- [ ] add 3 [JavaScripts Snippets](https://github.com/nathanchapman/vscode-javascript-snippets) to your `cheatcodes.md`.
 
-**🔭 Hint:** I use `map⇥` and `filter⇥` all the time.
+**🔭 Hint:** I use `fn⇥`, `map⇥` and `filter⇥` all the time.
 
 ### Turbo `console.log()`
 
@@ -134,7 +134,7 @@ In your `settings.json`:
 
 <img src="https://raw.githubusercontent.com/flexbox/react-native-bootcamp/main/challenges/ecosystem/autoDetectColorScheme.png" alt="VS Code theme for light and dark mode" />
 
-I use the theme [Night Owl](https://github.com/sdras/night-owl-vs code-theme)
+I use the theme [Night Owl](https://github.com/sdras/night-owl-vscode-theme)
 
 ```console
 code --install-extension sdras.night-owl