Adjust spaces after list markers.

doc/guides/symbol.md

@@ -57,13 +57,13 @@ To save RAM, `mruby` can use compile-time allocation of some symbols. You can
 use following macros to get preallocated symbols by including `mruby/presym.h`
 header.
 
- *   `MRB_SYM(xor)`    //=> xor    (Word characters)
- *   `MRB_SYM_B(xor)`  //=> xor!   (Method with Bang)
- *   `MRB_SYM_Q(xor)`  //=> xor?   (Method with Question mark)
- *   `MRB_SYM_E(xor)`  //=> xor=   (Method with Equal)
- *   `MRB_CVSYM(xor)`  //=> @@xor  (Class Variable)
- *   `MRB_IVSYM(xor)`  //=> @xor   (Instance Variable)
- *   `MRB_OPSYM(xor)`  //=> ^      (Operator)
+ * `MRB_SYM(xor)`    //=> xor    (Word characters)
+ * `MRB_SYM_B(xor)`  //=> xor!   (Method with Bang)
+ * `MRB_SYM_Q(xor)`  //=> xor?   (Method with Question mark)
+ * `MRB_SYM_E(xor)`  //=> xor=   (Method with Equal)
+ * `MRB_CVSYM(xor)`  //=> @@xor  (Class Variable)
+ * `MRB_IVSYM(xor)`  //=> @xor   (Instance Variable)
+ * `MRB_OPSYM(xor)`  //=> ^      (Operator)
 
 For `MRB_OPSYM()`, specify the names corresponding to operators (see
 `MRuby::Presym::OPERATORS` in `lib/mruby/presym.rb` for the names that