can-j1939: remove trailing whitespace

Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

can-j1939.md

@@ -23,7 +23,7 @@ See [Wikipedia:socketcan](http://en.wikipedia.org/wiki/Socketcan)
     * PDU2: PGN
   * 27..29: PRIO
 
-* SA / DA may be dynamically assigned via j1939-81  
+* SA / DA may be dynamically assigned via j1939-81
   Fixed rules of precedence in Specification, no master necessary
 
 ## J1939 on SocketCAN
@@ -41,7 +41,7 @@ SA, DA & PGN are used, not CAN id.
 Berkeley socket API is used to communicate these to userspace:
 
   * SA+PGN is put in sockname ([getsockname](http://man7.org/linux/man-pages/man2/getsockname.2.html))
-  * DA+PGN is put in peername ([getpeername](http://man7.org/linux/man-pages/man2/getpeername.2.html))  
+  * DA+PGN is put in peername ([getpeername](http://man7.org/linux/man-pages/man2/getpeername.2.html))
     PGN is put in both structs
 
 PRIO is a datalink property, and irrelevant for interpretation
@@ -107,14 +107,14 @@ This API is dropped for kernels with netlink support!
 
 * *can_addr.j1939.pgn* is PGN
 
-* *can_addr.j1939.addr* & *can_addr.j1939.name*  
+* *can_addr.j1939.addr* & *can_addr.j1939.name*
   determine the ECU
 
-  * receiving address information,  
-    *addr* is always set,  
+  * receiving address information,
+    *addr* is always set,
     *name* is set when available.
 
-  * When providing address information,  
+  * When providing address information,
     *name* != 0 indicates dynamic addressing
 
 ## iproute2 (obsolete!)
@@ -129,4 +129,3 @@ for manipulating the kernel lists of current addresses.
 ### Dynamic addressing
 
 	ip addr add j1939 name 0x012345678abcdef dev can0
-