docs(rustc): De-emphasize --cfg/--check-cfg note

At the suggestion of @Urgau

Author: epage

src/doc/rustc/src/check-cfg.md

@@ -11,9 +11,6 @@ development process.
 In order to accomplish that goal, `rustc` accepts the `--check-cfg` flag, which specifies
 whether to check conditions and how to check them.
 
-> **Note:** No implicit expectation is added when using `--cfg`. Users are expected to
-pass all expected names and values using the _check cfg specification_.
-
 > **Note:** For interacting with this through Cargo,
 see [Cargo Specifics](check-cfg/cargo-specifics.md) page.
 
@@ -26,6 +23,9 @@ breaking change.
 To specify expected names and values, the _check cfg specification_ provides the `cfg(...)`
 option which enables specifying for an expected config name and it's expected values.
 
+> **Note:** No implicit expectation is added when using `--cfg`. Users are expected to
+pass all expected names and values using the _check cfg specification_.
+
 It has this basic form:
 
 ```bash