docs(readme): fix section link

Author: shuheng-liu

README.md

@@ -20,7 +20,7 @@
 
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-**🔥🔥🔥Did you know that neurodiffeq supports solution bundles and can be used to solve reverse problems? [See here](#Solution Bundle and Reverse Problems)!**
+**🔥🔥🔥Did you know that neurodiffeq supports solution bundles and can be used to solve reverse problems? [See here](#solution-bundle-and-reverse-problems)!**
 
 :mortar_board: **Already familiar with neurodiffeq?** :point_down: **[Jump to FAQs](#faq).**