make clear that other versions can work (rust-lang#1373)

Author: tshepang

src/rustc-driver-getting-diagnostics.md

@@ -6,7 +6,7 @@
 
 To get diagnostics from the compiler,
 configure `rustc_interface::Config` to output diagnostic to a buffer,
-and run `TyCtxt.analysis`. The following should be compiled
+and run `TyCtxt.analysis`. The following was tested
 with <!-- date: 2022-06 --> `nightly-2022-06-05` (See [here][example]
 for the complete example):
 

src/rustc-driver-interacting-with-the-ast.md

@@ -5,7 +5,7 @@
 ## Getting the type of an expression
 
 To get the type of an expression, use the `global_ctxt` to get a `TyCtxt`.
-The following should be compiled with <!-- date: 2022-06 --> `nightly-2022-06-05`
+The following was tested with <!-- date: 2022-06 --> `nightly-2022-06-05`
 (see [here][example] for the complete example):
 
 [example]: https://github.com/rust-lang/rustc-dev-guide/blob/master/examples/rustc-driver-interacting-with-the-ast.rs