Removes errant space, adds newline at the end of the file.

centos/content.md

@@ -85,7 +85,7 @@ This container is running with systemd in a limited context, with the cgroups fi
 
 ## A note about vsyscall
 
-CentOS 6 binaries and/or libraries are built to expect some system calls to be accessed via `vsyscall` mappings.  Some linux distributions have opted to disable `vsyscall` entirely (opting exclusively for more secure `vdso` mappings), causing segmentation faults.
+CentOS 6 binaries and/or libraries are built to expect some system calls to be accessed via `vsyscall` mappings. Some linux distributions have opted to disable `vsyscall` entirely (opting exclusively for more secure `vdso` mappings), causing segmentation faults.
 
 If running `docker run --rm -it centos:centos6.7 bash` immediately exits with status code `139`, check to see if your system has disabled vsyscall:
 
@@ -105,4 +105,4 @@ ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0                  [vsysca
 
 If you do not see a `vsyscall` mapping, and you need to run a legacy CentOS container, try adding `vsyscall=emulated` to the kernel options in your bootloader
 
-Further reading : [lwn.net](https://lwn.net/Articles/446528/)
+Further reading : [lwn.net](https://lwn.net/Articles/446528/)