Remove '-p' flag for 'cd'

'-p' flag does not exist
diff --git a/blissroms/build-guide.md b/blissroms/build-guide.md
index 0c5736d..c2e6a9a 100644
--- a/blissroms/build-guide.md
+++ b/blissroms/build-guide.md
@@ -91,7 +91,7 @@
 Create a directory for the source:
 
     mkdir -p ~/bliss/p9.0
-    cd -p ~/bliss/p9.0
+    cd ~/bliss/p9.0
 
 Before we download, we need to tell `repo` and `git` who we are. Run the following commands, substituting your information: