Auto merge of #7770 - giraffate:fix_docs, r=alexcrichton

Fix some links

- Remove unused link in doc. Follow up d1d0837.
- Update the reference link in a message. Follow up dc81356.

Author: bors

crates/cargo-platform/src/lib.rs

@@ -91,7 +91,7 @@ impl Platform {
                                  This key is not supported for selecting dependencies \
                                  and will not work as expected. \
                                  Use the [features] section instead: \
-                                 https://doc.rust-lang.org/cargo/reference/manifest.html#the-features-section"
+                                 https://doc.rust-lang.org/cargo/reference/features.html"
                             )),
                         _ => (),
                     },

src/doc/src/reference/source-replacement.md

@@ -26,7 +26,6 @@ dependencies through the usage of [the `[patch]` key][overriding
 dependencies], and private registry support is described in [the Registries
 chapter][registries].
 
-[replace-section]: manifest.md#the-replace-section
 [overriding dependencies]: overriding-dependencies.md
 [registries]: registries.md