Correct Workflow typing (#1533)

When Workflow support was added, the method calls were not added to
the typing file for Repository, and somehow the class name for the
Workflow typing file was incorrect.

github/Repository.pyi

@@ -48,6 +48,7 @@ from github.StatsPunchCard import StatsPunchCard
 from github.Tag import Tag
 from github.Team import Team
 from github.View import View
+from github.Workflow import Workflow
 
 class Repository(CompletableGithubObject):
     def __repr__(self) -> str: ...
@@ -381,6 +382,8 @@ class Repository(CompletableGithubObject):
     ) -> Dict[str, Union[int, List[View]]]: ...
     def get_vulnerability_alert(self) -> bool: ...
     def get_watchers(self) -> PaginatedList[NamedUser]: ...
+    def get_workflow(self, id_or_name: Union[str, int]) -> Workflow: ...
+    def get_workflows(self) -> PaginatedList[Workflow]: ...
     @property
     def git_commits_url(self) -> str: ...
     @property

github/Workflow.pyi

@@ -3,7 +3,7 @@ from typing import Any, Dict
 
 from github.GithubObject import CompletableGithubObject
 
-class Deployment(CompletableGithubObject):
+class Workflow(CompletableGithubObject):
     def __repr__(self) -> str: ...
     def _initAttributes(self) -> None: ...
     def _useAttributes(self, attributes: Dict[str, Any]) -> None: ...