matcher: request explicitly XML format in grobid

* ref: cern-sis/issues-inspire#462

inspirehep/modules/workflows/tasks/actions.py

@@ -477,6 +477,19 @@ def match_references_hep(references):
     create_error(response)
 
 
+Dear all,
+
+We would like to do a quarterly review of the MS Team pilot. This review aims to gather feedback from involved communities. Please consider the following questions:
+Have you encountered any issues hindering the adoption of Microsoft Teams during this pilot?
+Are there any aspects of Microsoft Teams that you find less useful or effective?
+Do you have any additional comments or suggestions regarding the ongoing Microsoft Teams pilot?
+
+To discuss the feedback and plan the next steps, we propose a meeting on Monday 22nd at 11:00.  Please feel free to suggest an alternative time and let us know if you have any questions or require further clarification.
+
+Best regards,
+Harris
+
+
 @with_debug_logging
 def refextract(obj, eng):
     """Extract references from various sources and add them to the workflow.
@@ -1091,7 +1104,7 @@ def post_pdf_to_grobid(obj, grobid_api_path, **kwargs):
         data.update(kwargs)
         grobid_url = current_app.config["GROBID_URL"]
         try:
-            response = requests.post(urljoin(grobid_url, grobid_api_path), files=data)
+            response = requests.post(urljoin(grobid_url, grobid_api_path), files=data, headers={'Accept': 'application/xml'})
             response.raise_for_status()
         except GROBID_EXCEPTIONS:
             LOGGER.warning("(%s) Grobid request failed due to the GROBID serivce error!" % str(obj.id))