Rollup merge of #131710 - ShE3py:parse_format_apostrophes, r=compiler-errors

Remove `'apostrophes'` from `rustc_parse_format`

The rest of the compiler uses \`grave accents\`, while `rustc_parse_format` uses \`'apostrophes.'\`

Also makes the crate compile as a stand-alone:
```
~/rust/compiler/rustc_parse_format $ cargo check
   Compiling rustc_index_macros v0.0.0 (/home/lieselotte/rust/compiler/rustc_index_macros)
error[E0277]: `syn::Lit` doesn't implement `Debug`
  --> compiler/rustc_index_macros/src/newtype.rs:52:57
   |
52 |                         panic!("Specified multiple max: {old:?}");
   |                                                         ^^^^^^^ `syn::Lit` cannot be formatted using `{:?}` because it doesn't implement `Debug`
   |
   = help: the trait `Debug` is not implemented for `syn::Lit`
   = note: this error originates in the macro `$crate::const_format_args` which comes from the expansion of the macro `panic` (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0277]: `syn::Lit` doesn't implement `Debug`
  --> compiler/rustc_index_macros/src/newtype.rs:64:74
   |
64 |                         panic!("Specified multiple debug format options: {old:?}");
   |                                                                          ^^^^^^^ `syn::Lit` cannot be formatted using `{:?}` because it doesn't implement `Debug`
   |
   = help: the trait `Debug` is not implemented for `syn::Lit`
   = note: this error originates in the macro `$crate::const_format_args` which comes from the expansion of the macro `panic` (in Nightly builds, run with -Z macro-backtrace for more info)

For more information about this error, try `rustc --explain E0277`.
error: could not compile `rustc_index_macros` (lib) due to 2 previous errors
```
`@rustbot` label +A-diagnostics

0 files changed, 0 insertions, 0 deletions