Intro: Fix link to BfBB decomp repository

Author: JoshSanch

src/introduction/about.typ

@@ -3,7 +3,7 @@
 
 Welcome to the exciting world of video game decompilation!
 This book serves as an introduction to the BFBB Decompilation Project
-#footnote("https://github.com/bfbbdecomp"),
+#footnote("https://github.com/bfbbdecomp/bfbb"),
 which is an organized community effort to reverse engineer the source code of
 the 2003 platform game "SpongeBob SquarePants: Battle for Bikini Bottom" (BFBB) for Nintendo GameCube.