tweak Config texts and some broken English elsewhere

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/libbb/Config.in b/libbb/Config.in
index 7ced387..a572775 100644
--- a/libbb/Config.in
+++ b/libbb/Config.in
@@ -163,4 +163,5 @@
 	help
 	  Support for printing infiniband addresses in
 	  network applets.
+
 endmenu