Fix the MEH and HYPER aliases

We need to guard the `k` argument, place it within parens, to make sure it is
treated as a single argument, even if it expands to something that would be
ambigous. This is required, because most - if not all - keys are defined as a
list casted to `Key`, which the pre-processor would misinterpret without the
extra parens.

Signed-off-by: Gergely Nagy <algernon@keyboard.io>

src/kaleidoscope/key_defs_aliases.h

@@ -63,5 +63,5 @@
 #define Key_Meh   LCTRL(LSHIFT(Key_LeftAlt))
 #define Key_Hyper MEH(Key_LeftGui)
 
-#define MEH(k)   LCTRL(LSHIFT(LALT(k)))
+#define MEH(k)   LCTRL(LSHIFT(LALT((k))))
-#define HYPER(k) LGUI(MEH(k))
+#define HYPER(k) LGUI(MEH((k)))