pixma_bjnp.c sane-pixma.doc Fix trailing spaces

doc/sane-pixma.man

@@ -246,10 +246,10 @@ support dynamic loading).
 .I @CONFIGDIR@/pixma.conf
 The backend configuration file (see also description of
 .B SANE_CONFIG_DIR
-below). 
+below).
 .RS
 .PP
-The file contains an optional list of networked scanners using the BJNP or MFNP protools 
+The file contains an optional list of networked scanners using the BJNP or MFNP protools
 (See below for datails on networking support for scanners). Normally
 only scanners that cannot be auto-detected because they are on a different
 subnet shall be listed here. If you do not use Linux and your OS does not allow enumeration of
@@ -295,12 +295,12 @@ Setting timeouts should only be required in exceptional cases.
 USB scanners will be auto-detected and require no configuration.
 .SH NETWORKING SUPPORT
 The pixma backend supports network scanners using the so called Canon BJNP
-and MFNP protocols. 
-.PP 
+and MFNP protocols.
+.PP
 Canon seems to be dropping support for these protocols in recent scanners.
 To verify if your scanner supports one of these protocols, check the content of
 the _scanner._tcp service entry in mDNS/DNS-SD (using for example  avahi-discover).
-If that does not list port 8610 
+If that does not list port 8610.
 or 8612 your scanner pobably does not support the mfmp or bjnp protols.
 .PP
 Both IPv4 and IPv6 are supported, but IPv6 is as