Rollup merge of rust-lang#73092 - GuillaumeGomez:cleanup-e0646, r=Dylan-DPC

Dylan-DPC · web-flow · commit eb3187951088 · 2020-06-08T00:09:22.000+02:00
Clean up E0646 r? @Dylan-DPC
diff --git a/src/librustc_error_codes/error_codes/E0646.md b/src/librustc_error_codes/error_codes/E0646.md
@@ -1,4 +1,5 @@
 It is not possible to define `main` with a where clause.
+
 Erroneous code example:
 
 ```compile_fail,E0646

Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,5 @@`
`1`	`1`	It is not possible to define `main` with a where clause.
	`2`	`+`
`2`	`3`	`Erroneous code example:`
`3`	`4`
`4`	`5`	```compile_fail,E0646