Add -p to mkdir to ensure to create all un-exist parent directories

Signed-off-by: utzcoz <utzcoz@outlook.com>
diff --git a/Bliss OS/build-guide/index.html b/Bliss OS/build-guide/index.html
index 8f3a139..da55057 100644
--- a/Bliss OS/build-guide/index.html
+++ b/Bliss OS/build-guide/index.html
@@ -965,8 +965,8 @@
 <p>This will do initial patching. Some of the patches will show as <code>already applied</code> or <code>conflict</code>. This is normal behavior and will not effect the build process if you continue to the next step without addressing any of the conflicts.</p>
 <p><strong>The only times you should worry about the conflicts is when you are adding or changing patches in <code>vendor/x86</code></strong>.</p>
 <p>Next step is to download the proprietary files from ChromeOS:</p>
-<pre><code>mkdir vendor/bliss_priv/proprietary
-mkdir vendor/bliss_priv/source
+<pre><code>mkdir -p vendor/bliss_priv/proprietary
+mkdir -p vendor/bliss_priv/source
 bash build-x86.sh -r android_x86_64-userdebug
 </code></pre>
 <p>After that, you can build your release file:</p>
@@ -988,7 +988,7 @@
 <h3 id="my-device-isnt-booting-and-userdebug-wont-print-any-adb-logcats-what-gives">My device isn't booting, and <code>userdebug</code> won't print any <code>adb logcat</code>s. What gives?</h3>
 <p>There is a third build variant called <code>eng</code>, short for engineering builds. These builds will activate <code>adb logcat</code> during boot, and will show you exactly what is going wrong, where, and why. However, these builds are <strong>NOT</strong> recommended for normal usage as they are not securely hardened, have log spam that will slow down your device, and other unexpected problems like userspace utilities crashing during runtime. If you want to submit your device for mainline, do <strong>NOT</strong> submit an <code>eng</code> build!</p>
 <p>If this is the first time you're running the build, you're going to want to run the proprietary build command first from the easy build instructions. Alternatively, you could also run those commands manually.</p>
-<pre><code>mkdir vendor/bliss_priv/proprietary &amp;&amp; mkdir vendor/bliss_priv/source
+<pre><code>mkdir -p vendor/bliss_priv/proprietary &amp;&amp; mkdir -p vendor/bliss_priv/source
 </code></pre>
 <p>Then:</p>
 <pre><code>lunch android_x86_64-userdebug