Upgrade the README.md

Mayuri · Mayuri · commit ed6d26a88f51 · 2021-12-03T21:28:09.000+08:00
diff --git a/c/README.md b/c/README.md
@@ -6,4 +6,4 @@ cmake .. -G "MinGW Makefiles"
 make
 ```
 
-The bin will be find in ./bin/
+The bin will be find in `./bin/`
