chore: invalid docstrings broke docfx (googleapis#924)

Author: Jim Fulton

google/cloud/bigquery/job/copy_.py

@@ -240,7 +240,7 @@ def to_api_repr(self):
     def from_api_repr(cls, resource, client):
         """Factory: construct a job given its API representation
 
-        .. note:
+        .. note::
 
            This method assumes that the project found in the resource matches
            the client's project.

google/cloud/bigquery/job/extract.py

@@ -244,7 +244,7 @@ def to_api_repr(self):
     def from_api_repr(cls, resource: dict, client) -> "ExtractJob":
         """Factory:  construct a job given its API representation
 
-        .. note:
+        .. note::
 
            This method assumes that the project found in the resource matches
            the client's project.

google/cloud/bigquery/job/load.py

@@ -800,7 +800,7 @@ def to_api_repr(self):
     def from_api_repr(cls, resource: dict, client) -> "LoadJob":
         """Factory:  construct a job given its API representation
 
-        .. note:
+        .. note::
 
            This method assumes that the project found in the resource matches
            the client's project.