Style guide: administration password

wiki/src/contribute/how/documentation/style_guide.mdwn

 [[!meta title="Documentation style guide"]]
 
+- **administration password** vs **root password**
+
+  Use *administration password*. Avoid *root password* even though many
+  Linux users would use it.
+
+  - *For example:*
+
+    - [[Set up an administration password
+      |doc/first_steps/startup_options/administration_password]] when
+      you start Tails.
+
+    - Start Tails and [[set up an administration
+      password|doc/first_steps/startup_options/administration_password]].
+
 - **anchors** (HTML anchors)
 
   Use HTML anchors to provide shortcuts when pointing people to sections