talloc_ctx_vty: Fix help strings (missing \n at end of line)

This was causing build failures in applications using this library
feature:

Documentation error (missing docs):
<command id='show talloc-context (application|all) (full|brief|DEPTH) tree ADDRESS'>
        <param name='ADDRESS' doc='(null)' />

Documentation error (missing docs):
<command id='show talloc-context (application|all) (full|brief|DEPTH) filter REGEXP'>
        <param name='REGEXP' doc='(null)' />

Documentation error (missing docs):
<command id='show talloc-context (application|all) (full|brief|DEPTH) tree ADDRESS'>
        <param name='ADDRESS' doc='(null)' />

Documentation error (missing docs):
<command id='show talloc-context (application|all) (full|brief|DEPTH) filter REGEXP'>
        <param name='REGEXP' doc='(null)' />

Change-Id: I785c852e3313d20eade79746a7cd485d2d5908ea
diff --git a/src/vty/talloc_ctx_vty.c b/src/vty/talloc_ctx_vty.c
index 601b696..e7fe675 100644
--- a/src/vty/talloc_ctx_vty.c
+++ b/src/vty/talloc_ctx_vty.c
@@ -175,7 +175,7 @@
 	"All contexts, if NULL-context tracking is enabled\n" \
 	"Display a full talloc memory hierarchy\n" \
 	"Display a brief talloc memory hierarchy\n" \
-	"Specify required maximal depth value"
+	"Specify required maximal depth value\n"
 
 DEFUN(show_talloc_ctx, show_talloc_ctx_cmd,
 	BASE_CMD_STR, BASE_CMD_DESCR)
@@ -202,7 +202,7 @@
 DEFUN(show_talloc_ctx_filter, show_talloc_ctx_filter_cmd,
 	BASE_CMD_STR " filter REGEXP", BASE_CMD_DESCR
 	"Filter chunks using regular expression\n"
-	"Regular expression")
+	"Regular expression\n")
 {
 	struct walk_cb_params *params;
 	int rc;
@@ -236,7 +236,7 @@
 DEFUN(show_talloc_ctx_tree, show_talloc_ctx_tree_cmd,
 	BASE_CMD_STR " tree ADDRESS", BASE_CMD_DESCR
 	"Display only a specific memory chunk\n"
-	"Chunk address (e.g. 0xdeadbeef)")
+	"Chunk address (e.g. 0xdeadbeef)\n")
 {
 	struct walk_cb_params *params;
 	int rc;