add natspec for endpoint

src/ReflexEndpoint.sol

@@ -7,6 +7,11 @@ import {IReflexEndpoint} from "./interfaces/IReflexEndpoint.sol";
 /**
  * @title Reflex Endpoint
  *
+ * @dev `Endpoints` are trusted contracts that receive calls and forward them to the `Dispatcher` using `CALL`.
+ * The forwarded calldata is appended with the `msg.sender` of the original call.
+ * `Endpoints` are commonly deployed by the `Installer` upon registering of a module
+ * and by multi-module factories upon instance creation.
+ *
  * @dev Execution takes place within the Dispatcher's storage context, not the endpoints'.
  * @dev Non-upgradeable, extendable.
  */

src/ReflexInstaller.sol

@@ -14,7 +14,7 @@ import {ReflexModule} from "./ReflexModule.sol";
  * @dev The `Installer` manages the ownership of the Reflex layer and the registration of modules.
  * The owner has the ability to add modules and upgrade existing modules.
  * The transferral of ownership is a two-step process, where the new owner must accept the ownership transfer.
- * The `Installer` is also a module itself with an endpoint and can be upgraded.
+ * The `Installer` is also a module itself with an `Endpoint` and can be upgraded.
  *
  * @dev Execution takes place within the Dispatcher's storage context.
  * @dev Upgradeable, extendable.