Update tests

Author: estebank

tests/rustdoc-ui/ice-unresolved-import-100241.stderr

@@ -4,7 +4,7 @@ error[E0432]: unresolved import `inner`
 LL |     pub use inner::S;
    |             ^^^^^ use of unresolved module or unlinked crate `inner`
    |
-help: if you wanted to use a crate named `inner`, use `cargo add inner` to add it to your `Cargo.toml` and import it in your code
+help: you might be missing a crate named `inner`, add it to your project and import it in your code
    |
 LL + extern crate inner;
    |

tests/rustdoc-ui/intra-doc/unresolved-import-recovery.stderr

@@ -4,7 +4,7 @@ error[E0433]: failed to resolve: use of unresolved module or unlinked crate `unr
 LL | use unresolved_crate::module::Name;
    |     ^^^^^^^^^^^^^^^^ use of unresolved module or unlinked crate `unresolved_crate`
    |
-help: if you wanted to use a crate named `unresolved_crate`, use `cargo add unresolved_crate` to add it to your `Cargo.toml` and import it in your code
+help: you might be missing a crate named `unresolved_crate`, add it to your project and import it in your code
    |
 LL + extern crate unresolved_crate;
    |

tests/rustdoc-ui/issues/issue-61732.stderr

@@ -4,7 +4,7 @@ error[E0433]: failed to resolve: use of unresolved module or unlinked crate `r#m
 LL | pub(in crate::r#mod) fn main() {}
    |               ^^^^^ use of unresolved module or unlinked crate `r#mod`
    |
-help: if you wanted to use a crate named `r#mod`, use `cargo add r#mod` to add it to your `Cargo.toml` and import it in your code
+help: you might be missing a crate named `r#mod`, add it to your project and import it in your code
    |
 LL + extern crate r#mod;
    |