manpages: fix hyphen-used-as-minus-sign

properly escape minus signs to make them easily pastable.

initramfs-tools.8

@@ -387,7 +387,7 @@ esac
 . /usr/share/initramfs-tools/hook-functions
 # Begin real processing below this line
 
-if [ ! -x "/sbin/frobnicate" ]; then
+if [ ! \-x "/sbin/frobnicate" ]; then
 	exit 0
 fi
 
@@ -419,11 +419,11 @@ prereqs)
 esac
 
 # Begin real processing below this line
-if [ ! -x "/sbin/frobnicate" ]; then
+if [ ! \-x "/sbin/frobnicate" ]; then
 	panic "Frobnication executable not found"
 fi
 
-if [ ! -e "/dev/mapper/frobb" ]; then
+if [ ! \-e "/dev/mapper/frobb" ]; then
 	panic "Frobnication device not found"
 fi
 
@@ -442,8 +442,8 @@ to double-check if it contains the relevant binaries, libs or modules:
 .nf
 mkdir tmp/initramfs
 cd tmp/initramfs
-gunzip -c -9 /boot/initrd.img-2.6.18-1-686 | \\
-cpio -i -d -H newc --no-absolute-filenames
+gunzip \-c \-9 /boot/initrd.img\-2.6.18\-1\-686 | \\
+cpio \-i \-d \-H newc \-\-no\-absolute\-filenames
 .fi
 .RE
 

update-initramfs.8

@@ -30,7 +30,7 @@ happens in this early userspace.
 .TP
 \fB \-k \fI version
 Set the specific kernel version for whom the initramfs will be generated.
-For example the output of uname -r for your currently running kernel.
+For example the output of uname \-r for your currently running kernel.
 This argument is optional for update. The default is the latest kernel version.
 
 The use of "all" for the

update-initramfs.conf.5

@@ -15,7 +15,7 @@ newest Linux image.
 Setting it to \fIall\fP updates any known initramfs.
 It is possible to set it to \fIno\fP for remote servers or boxes where
 conservative manners needs to be applied. This disables
-the \fBupdate_initramfs -u\fP call.
+the \fBupdate_initramfs \-u\fP call.
 
 .SH AUTHOR
 The initramfs-tools are written by Maximilian Attems <maks@debian.org>,