Migrate to docs.substrate.io throughout (#10007)

* all reverences of substrate.dev replaced with *correct* docs.substrate.io links

* fix links in non-cargo files, errors in replace

* homepage https://substrate.io

* cargo +nightly fmt

* FMT

Co-authored-by: Bastian Köcher <info@kchr.de>

substrate/utils/frame/try-runtime/cli/src/lib.rs

@@ -29,9 +29,9 @@
 //!
 //! Some resources about the above:
 //!
-//! 1. <https://substrate.dev/docs/en/knowledgebase/integrate/try-runtime>
+//! 1. <https://docs.substrate.io/v3/tools/try-runtime>
 //! 2. <https://www.crowdcast.io/e/substrate-seminar/41>
-//! 3. <https://substrate.dev/docs/en/knowledgebase/advanced/executor>
+//! 3. <https://docs.substrate.io/v3/advanced/executor>
 //!
 //! ---
 //!