sysdev: nfs: Fix nfsroot line

There is not reason to split the nfsroot cmdline keyword, especially since:
- We expect a space between the end of the ip keyword and the nfsroot
  keyword, but no space after "tinysystem/" nor "nfsroot,".
- The full sentence is contained on a single line in the final pdf.

Signed-off-by: Miquel Raynal <[email protected]>

labs/sysdev-tinysystem/sysdev-tinysystem.tex

@@ -86,21 +86,18 @@ \section{Booting the system}
 \begin{ubootinput}
 => setenv bootargs ${bootargs} root=/dev/nfs ip=192.168.0.100:::::usb0
    g_ether.dev_addr=f8:dc:7a:00:00:02 g_ether.host_addr=f8:dc:7a:00:00:01
-   nfsroot=192.168.0.1:/home/<user>/__SESSION_NAME__-labs/tinysystem/nfsroot,
-   nfsvers=3,tcp rw
+   nfsroot=192.168.0.1:/home/<user>/__SESSION_NAME__-labs/tinysystem/nfsroot,nfsvers=3,tcp rw
 \end{ubootinput}
 \else
 \if\defstring{\labboard}{beagleplay}
   \begin{ubootinput}
 => setenv bootargs ${bootargs} root=/dev/nfs ip=192.168.0.100:::::eth0
-   nfsroot=192.168.0.1:/home/<user>/__SESSION_NAME__-labs/tinysystem/
-   nfsroot,nfsvers=3,tcp rw
+   nfsroot=192.168.0.1:/home/<user>/__SESSION_NAME__-labs/tinysystem/nfsroot,nfsvers=3,tcp rw
   \end{ubootinput}
 \else
 \begin{ubootinput}
 => setenv bootargs ${bootargs} root=/dev/nfs ip=192.168.0.100
-   nfsroot=192.168.0.1:/home/<user>/__SESSION_NAME__-labs/tinysystem/nfsroot,
-   nfsvers=3,tcp rw
+   nfsroot=192.168.0.1:/home/<user>/__SESSION_NAME__-labs/tinysystem/nfsroot,nfsvers=3,tcp rw
 \end{ubootinput}
 \fi
 \fi