Merge pull request #920 from MeowB/myFork

adding frontend mentor to the generalResources.md

generalResources.md

@@ -1,5 +1,4 @@
 **[Back](/README.md/)**
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 # General Resources for Learning Web Development
 
 - [MDN Web Docs](https://developer.mozilla.org/en-US/): A resource for developers, maintained by the community of developers and technical writers and hosting many documents on a wide variety of subjects, such as: HTML, CSS, HTTP, JavaScript, Web APIs, Web components, Graphics, Audio, video and multimedia, MathML.
@@ -52,3 +51,5 @@
 * [roadmap.sh](https://roadmap.sh): Displays dedicated roadmaps for a specific field or technology including Front End, Back End, Full Stack, React, Java etc.
 
 * [**CompSciLib**](https://www.compscilib.com/): A free site for learning and practicing Computer Science theory topics in courses such as Computer Organization, Discrete Math, Networking, etc. Think Khan Academy, but for Computer Science.
+
+* [**frontend Mentor**](https://www.frontendmentor.io/challenges): Solve real-world HTML, CSS and JavaScript challenges whilst working to professional designs.