Update README.md

Fixed error
diff --git a/README.md b/README.md
index 1d62512..93d48fb 100644
--- a/README.md
+++ b/README.md
@@ -50,7 +50,7 @@
 3. View layout:
 ```
 cd amsat_txrx_ic-caravel/gds
-klayout amsat_txrx_ic-caravel.gds
+klayout caravel.gds
 ```
 
 4. Run DRC: