E0131 updated to new format
Changes
```
error[E0131]: main function is not allowed to have type parameters
--> src/test/compile-fail/E0131.rs:11:1
|
11 | fn main<T>() { //~ ERROR E0131
| ^
```
to
```
error[E0131]: main function is not allowed to have type parameters
--> src/test/compile-fail/E0131.rs:11:1
|
11 | fn main<T>() { //~ ERROR E0131
| ^^^ main cannot have type parameters
```
Fixes #35257. Part of #35233.
r? @jonathandturner