doc changes from fastapi openapi first to openapi first. added cli docs

openapi_first/__init__.py

@@ -33,11 +33,11 @@ Installation
 
 Install using pip:
 
-    pip install fastapi-openapi-first
+    pip install openapi-first
 
 Or with Poetry:
 
-    poetry add fastapi-openapi-first
+    poetry add openapi-first
 
 Runtime dependencies are intentionally minimal:
 - fastapi
@@ -53,7 +53,7 @@ Basic Usage
 
 Minimal OpenAPI-first FastAPI application:
 
-    from fastapi_openapi_first import app
+    from openapi_first import app
     import my_service.routes as routes
 
     api = app.OpenAPIFirstApp(
@@ -104,10 +104,10 @@ Public API Surface
 
 The supported public API consists of the following top-level modules:
 
-- fastapi_openapi_first.app
-- fastapi_openapi_first.binder
-- fastapi_openapi_first.loader
-- fastapi_openapi_first.errors
+- openapi_first.app
+- openapi_first.binder
+- openapi_first.loader
+- openapi_first.errors
 
 Classes and functions should be imported explicitly from these modules.
 No individual symbols are re-exported at the package root.