feat: bump release level to production/stable (#151)

Fixes #150 🦕

Release-As: 1.0.0

.repo-metadata.json

@@ -4,7 +4,7 @@
   "product_documentation": "https://cloud.google.com/document-understanding/docs/",
   "client_documentation": "https://googleapis.dev/python/documentai/latest",
   "issue_tracker": "",
-  "release_level": "beta",
+  "release_level": "ga",
   "language": "python",
   "library_type": "GAPIC_AUTO",
   "repo": "googleapis/python-documentai",

README.rst

@@ -1,7 +1,7 @@
 Python Client for Cloud Document AI API
 ==================================================
 
-|beta| |pypi| |versions|
+|GA| |pypi| |versions|
 
 `Cloud Document AI API`_: Service to parse structured information from unstructured or
 semi-structured documents using state-of-the-art Google AI such as natural
@@ -10,8 +10,8 @@ language, computer vision, translation, and AutoML.
 - `Client Library Documentation`_
 - `Product Documentation`_
 
-.. |beta| image:: https://img.shields.io/badge/support-beta-orange.svg
-   :target: https://github.com/googleapis/google-cloud-python/blob/master/README.rst#beta-support
+.. |GA| image:: https://img.shields.io/badge/support-ga-gold.svg
+   :target: https://github.com/googleapis/google-cloud-python/blob/master/README.rst#general-availability
 .. |pypi| image:: https://img.shields.io/pypi/v/google-cloud-service-directory.svg
    :target: https://pypi.org/project/google-cloud-service-directory/
 .. |versions| image:: https://img.shields.io/pypi/pyversions/google-cloud-documentai.svg

setup.py

@@ -47,7 +47,7 @@
     python_requires=">=3.6",
     setup_requires=["libcst >= 0.2.5"],
     classifiers=[
-        "Development Status :: 4 - Beta",
+        "Development Status :: 5 - Production/Stable",
         "Intended Audience :: Developers",
         "Operating System :: OS Independent",
         "Programming Language :: Python :: 3.6",