Fix typo in comment

gdb/ChangeLog:

	* infcmd.c (interrupt_command): Fix typo in comment.
diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index bceb862..e11b41b 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,7 @@
+2016-11-25  Simon Marchi  <simon.marchi@ericsson.com>
+
+	* infcmd.c (interrupt_command): Fix typo in comment.
+
 2016-11-24  John Baldwin  <jhb@FreeBSD.org>
 
 	* ada-lang.c (create_excep_cond_exprs): Do not use 'std::move'.
diff --git a/gdb/infcmd.c b/gdb/infcmd.c
index 2440c0c..942d61e 100644
--- a/gdb/infcmd.c
+++ b/gdb/infcmd.c
@@ -3063,7 +3063,7 @@
 
 /* interrupt [-a]
    Stop the execution of the target while running in async mode, in
-   the backgound.  In all-stop, stop the whole process.  In non-stop
+   the background.  In all-stop, stop the whole process.  In non-stop
    mode, stop the current thread only by default, or stop all threads
    if the `-a' switch is used.  */