Update test

Author: jonas-schievink

src/test/ui/extern/external-doc-error.rs

@@ -4,7 +4,6 @@
 
 #[doc(include = "not-a-file.md")]
 pub struct SomeStruct; //~^ ERROR couldn't read
-                       //~| HELP external doc paths are relative to the crate root
 
 #[doc(include = "auxiliary/invalid-utf8.txt")]
 pub struct InvalidUtf8; //~^ ERROR wasn't a utf-8 file

src/test/ui/extern/external-doc-error.stderr

@@ -3,35 +3,33 @@ error: couldn't read $DIR/not-a-file.md: $FILE_NOT_FOUND_MSG (os error 2)
    |
 LL | #[doc(include = "not-a-file.md")]
    |                 ^^^^^^^^^^^^^^^ couldn't read file
-   |
-   = help: external doc paths are relative to the crate root
 
 error: $DIR/auxiliary/invalid-utf8.txt wasn't a utf-8 file
-  --> $DIR/external-doc-error.rs:9:17
+  --> $DIR/external-doc-error.rs:8:17
    |
 LL | #[doc(include = "auxiliary/invalid-utf8.txt")]
    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ contains invalid utf-8
 
 error: expected path to external documentation
-  --> $DIR/external-doc-error.rs:12:7
+  --> $DIR/external-doc-error.rs:11:7
    |
 LL | #[doc(include)]
    |       ^^^^^^^ help: provide a file path with `=`: `include = "<path>"`
 
 error: expected path to external documentation
-  --> $DIR/external-doc-error.rs:17:7
+  --> $DIR/external-doc-error.rs:16:7
    |
 LL | #[doc(include("../README.md"))]
    |       ^^^^^^^^^^^^^^^^^^^^^^^ help: provide a file path with `=`: `include = "../README.md"`
 
 error: expected path to external documentation
-  --> $DIR/external-doc-error.rs:22:7
+  --> $DIR/external-doc-error.rs:21:7
    |
 LL | #[doc(include = 123)]
    |       ^^^^^^^^^^^^^ help: provide a file path with `=`: `include = "<path>"`
 
 error: expected path to external documentation
-  --> $DIR/external-doc-error.rs:27:7
+  --> $DIR/external-doc-error.rs:26:7
    |
 LL | #[doc(include(123))]
    |       ^^^^^^^^^^^^ help: provide a file path with `=`: `include = "<path>"`