README.md in rbs-3.4.4 vs README.md in rbs-3.5.0.pre.1

- old
+ new

@@ -116,11 +116,11 @@
 ```
 
 It prints signatures for all methods, classes, instance variables, and constants.
 This is only a starting point, and you should edit the output to match your signature more accurately.
 
-`rbs prototpe` offers three options.
+`rbs prototype` offers three options.
 
 - `rb` generates from just the available Ruby code
 - `rbi` generates from Sorbet RBI
 - `runtime` generates from runtime API
 
@@ -172,9 +172,10 @@
 ```
 <!-- run-end -->
 
 ## Guides
 
+- [Architecture](docs/architecture.md)
 - [Core and standard library signature contribution guide](docs/CONTRIBUTING.md)
 - [Writing signatures guide](docs/sigs.md)
 - [Stdlib signatures guide](docs/stdlib.md)
 - [Syntax](docs/syntax.md)
 - [RBS by Example](docs/rbs_by_example.md)