slides/yocto-recipe-advanced: fix sentence about class search

Since scarthgap bitbake also looks in classes-recipe and classes-global.

Signed-off-by: Antonin Godard <[email protected]>

slides/yocto-recipe-advanced/yocto-recipe-advanced.tex

@@ -339,7 +339,8 @@ \subsection{BitBake file inclusions}
     \item To inherit the functionalities of the \code{kernel} class,
       use: \code{inherit kernel}
     \item \code{inherit} looks for files ending in \code{.bbclass}, in
-      \code{classes} directories found in \yoctovar{BBPATH}.
+      \code{classes}, \code{classes-recipe} or \code{classes-global} directories
+      found in \yoctovar{BBPATH}.
     \item It is possible to include a class conditionally using a
       variable: \code{inherit ${FOO}}
     \item Inheriting in configuration files is based on the \yoctovar{INHERIT}