labs/yocto-advanced-configuration-stm32: correct instructions

Signed-off-by: Michael Opdenacker <[email protected]>

labs/yocto-advanced-configuration-stm32/yocto-advanced-configuration-stm32.tex

@@ -27,11 +27,9 @@ \section{Set up the Ethernet communication and NFS on the board}
 }
 
 \begin{itemize}
-  \item For the \code{stm32mp157a-dk1-sdcard}
-        and the \code{stm32mp157d-dk1-sdcard}, edit
-        the \code{mmc0_extlinux/extlinux.conf} file
-  \item For the \code{stm32mp157c-dk2-sdcard}, edit the
-        \code{mmc0_extlinux/stm32mp157c-dk2_extlinux.conf} file
+  \item For the \code{stm32mp157a-dk1} board, edit the \code{mmc0_extlinux/extlinux.conf} file.
+  \item For the other boards, edit the corresponding file (for example \code{mmc0_extlinux/stm32mp157d-dk1_extlinux.conf}
+        for the \code{stm32mp157d-dk1} board).
 \end{itemize}
 
 \section{Set up the Ethernet communication on the workstation}