Fix docs

docs/docs/detectors/5-unused-return-enum.md

@@ -14,44 +14,45 @@ If definitions of Err() and/or Ok() are in the code but do not flow to the retur
 
 ### Example
 
+Instead of using:
+
 ```rust
-// example code where a warning is issued
+// example code that does not raise a warning
     #![cfg_attr(not(feature = "std"), no_std)]
     pub enum TradingPairErrors {
         Overflow,
     }
-    (...)
+
     #[ink(message)]
     pub fn get_percentage_difference(&mut self, value1: Balance, value2: Balance) -> Result<Balance, TradingPairErrors>  {
         let absolute_difference = value1.abs_diff(value2);
         let sum = value1 + value2;
         let percentage_difference =
         match 100u128.checked_mul(absolute_difference / sum) {
-           Some(result) => result,
-           None => Err(TradingPairErrors::Overflow),
-        }
+           Some(result) => Ok(result),
+           None => panic!("overflow!"),
+        };
+        return Err(TradingPairErrors::Overflow);
     }
 ```
 
-Use instead:
+Use this:
 
 ```rust
-// example code that does not raise a warning
     #![cfg_attr(not(feature = "std"), no_std)]
     pub enum TradingPairErrors {
         Overflow,
     }
-    (...)
+
     #[ink(message)]
     pub fn get_percentage_difference(&mut self, value1: Balance, value2: Balance) -> Result<Balance, TradingPairErrors>  {
         let absolute_difference = value1.abs_diff(value2);
         let sum = value1 + value2;
         let percentage_difference =
         match 100u128.checked_mul(absolute_difference / sum) {
-           Some(result) => Ok(result),
-           None => panic!("overflow!"),
-        };
-        return Err(TradingPairErrors::Overflow);
+           Some(result) => result,
+           None => Err(TradingPairErrors::Overflow),
+        }
     }
 ```