Update src/doc/rustc/src/platform-support/csky-unknown-linux-gnuabiv2.md

Co-authored-by: bjorn3 <17426603+bjorn3@users.noreply.github.com>

Author: Dirreke

src/doc/rustc/src/platform-support/csky-unknown-linux-gnuabiv2.md

@@ -9,7 +9,7 @@ target | std | host | notes
 `csky-unknown-linux-gnuabiv2` | ✓ |  | C-SKY abiv2 Linux(little endian)
 `csky-unknown-linux-gnuabiv2hf` | ✓ |  | C-SKY abiv2 Linux, hardfloat (little endian)
 
-Refrence:
+Reference:
 https://c-sky.github.io/
 
 https://gitlab.com/c-sky/