Update resources.md

resources.md

@@ -8,6 +8,8 @@ https://unsplash.com/
 - Old book illustrations
 https://www.oldbookillustrations.com/
 
+### SVG
+- [Basic free icons](https://iconsvg.xyz/)
 
 ### UI/UX
 - UI tips and tutorials
@@ -21,7 +23,7 @@ https://wweb.dev/resources/creative-backgrounds
 - About utility-first CSS (from the creator of Tailwind)
 https://adamwathan.me/css-utility-classes-and-separation-of-concerns/
 - [Comprehensive Guide: When to Use Em vs. Rem](https://webdesign.tutsplus.com/tutorials/comprehensive-guide-when-to-use-em-vs-rem--cms-239841)
-- [CSS Guidelines] (https://cssguidelin.es/)
+- [CSS Guidelines](https://cssguidelin.es/)
 
 ### Javascript
 - [You don't know JS](https://github.com/getify/You-Dont-Know-JS) (Kyle Simpson, 2020)