Make man page lint.

Index: src/iaito.1
--- src/iaito.1.orig
+++ src/iaito.1
@@ -76,4 +76,5 @@ The full documentation for
 is maintained as docs folder in the source
 .UR "https://github.com/radareorg/iaito/tree/master/docs"
 .BR "https://github.com/radareorg/iaito/tree/master/docs"
+.UE
 In your distribution you might find it compiled in separate iaiato-doc package.
