Fix Link (metaplex-foundation#818)

* Fix Link

* Update ARCHITECTURE.md

Co-authored-by: Jordan Sexton <[email protected]>

Co-authored-by: Jordan Sexton <[email protected]>

Author: jdcaballerov

ARCHITECTURE.md

@@ -178,7 +178,7 @@ pub struct EditionMarker {
 
 ```
 
-The instruction set for the token metadata contract can be found here: [https://github.com/metaplex-foundation/metaplex/blob/master/rust/token-metadata/program/src/instruction.rs](https://github.com/metaplex-foundation/metaplex/blob/master/rust/token-vault/program/src/instruction.rs)
+The instruction set for the token metadata contract can be found here: https://github.com/metaplex-foundation/metaplex/blob/master/rust/token-metadata/program/src/instruction.rs
 
 ### Types