more formatting tweaks

BaseN.md

@@ -114,7 +114,7 @@ char2int($/) -> 63.
 The only stupid cases arise when the number of bytes in the binary data
 is not a multiple of 3. In this case there are two padding rules:
 
-``` {.Erlang language="Erlang"}
+```erlang
 % general case: at least 3 bytes (24 bits = 6+6+6+6) remaining
 %
 % 12345678 abcdefgh 12345678    ...
@@ -160,7 +160,7 @@ By the way, that's the *entire* encode procedure right there.
 
 The decode procedure is similarly simple but slightly trickier:
 
-``` {.Erlang language="Erlang"}
+```erlang
 dec(Base64_String) ->
     dec(Base64_String, <<>>).
 
@@ -221,7 +221,6 @@ dec([W, X, Y, Z | Rest], Acc) ->
 This is marginally trickier because
 
 1.  it needs an accumulator
-
 2.  the order of the cases matters