chore: change docstring line breaks (via synth) (#13)

Author: yoshi-automation

google/cloud/billing_budgets_v1beta1/proto/budget_model_pb2.py

@@ -1,5 +1,5 @@
 {
-  "updateTime": "2020-02-24T13:12:54.102459Z",
+  "updateTime": "2020-02-25T13:13:30.274815Z",
   "sources": [
     {
       "generator": {
@@ -8,27 +8,13 @@
         "dockerImage": "googleapis/artman@sha256:36956ca6a4dc70a59de5d5d0fd35061b050bb56884516f0898f46d8220f25738"
       }
     },
-    {
-      "git": {
-        "name": ".",
-        "remote": "https://github.com/googleapis/python-billingbudgets.git",
-        "sha": "dfd5c6a625a3402fba0bb26b871d3f440c181d98"
-      }
-    },
     {
       "git": {
         "name": "googleapis",
         "remote": "https://github.com/googleapis/googleapis.git",
-        "sha": "7f910bcc4fc4704947ccfd3ceed015d16b9e00c2",
-        "internalRef": "296451205",
-        "log": "7f910bcc4fc4704947ccfd3ceed015d16b9e00c2\nUpdate Dataproc v1beta2 client.\n\nPiperOrigin-RevId: 296451205\n\nde287524405a3dce124d301634731584fc0432d7\nFix: Reinstate method signatures that had been missed off some RPCs\nFix: Correct resource types for two fields\n\nPiperOrigin-RevId: 296435091\n\n"
-      }
-    },
-    {
-      "git": {
-        "name": "synthtool",
-        "remote": "rpc://devrel/cloud/libraries/tools/autosynth",
-        "sha": "706a38c26db42299845396cdae55db635c38794a"
+        "sha": "0b1876b35e98f560f9c9ca9797955f020238a092",
+        "internalRef": "296986742",
+        "log": "0b1876b35e98f560f9c9ca9797955f020238a092\nUse an older version of protoc-docs-plugin that is compatible with the specified gapic-generator and protobuf versions.\n\nprotoc-docs-plugin >=0.4.0 (see commit https://github.com/googleapis/protoc-docs-plugin/commit/979f03ede6678c487337f3d7e88bae58df5207af) is incompatible with protobuf 3.9.1.\n\nPiperOrigin-RevId: 296986742\n\n1e47e676cddbbd8d93f19ba0665af15b5532417e\nFix: Restore a method signature for UpdateCluster\n\nPiperOrigin-RevId: 296901854\n\n"
       }
     },
     {