Rollup merge of #69394 - GuillaumeGomez:clean-up-0367, r=Dylan-DPC

Clean up E0367 explanation

r? @Dylan-DPC

Author: pietroalbini

src/librustc_error_codes/error_codes/E0367.md

@@ -1,8 +1,9 @@
 An attempt was made to implement `Drop` on a specialization of a generic type.
-An example is shown below:
+
+Erroneous code example:
 
 ```compile_fail,E0367
-trait Foo{}
+trait Foo {}
 
 struct MyStruct<T> {
     t: T