Add missing full stop in Bootstrap checks doc
Fixes
@@ -193,7 +193,7 @@ Elasticsearch installs system call filters of various flavors depending
on the operating system (e.g., seccomp on Linux). These system call
filters are installed to prevent the ability to execute system calls
related to forking as a defense mechanism against arbitrary code
-execution attacks on Elasticsearch The system call filter check ensures
+execution attacks on Elasticsearch. The system call filter check ensures
that if system call filters are enabled, then they were successfully
installed. To pass the system call filter check you must either fix any
configuration errors on your system that prevented system call filters
