Fix quotes in report-results.py

To fix the parsing error in the code, I would replace the double quotes around "unknown" with single quotes

Author: Thibuko

01_resultmodel/report-results.py

@@ -32,7 +32,7 @@ def start_test(self, test):
             "NOT RUN": "NOT RUN",
             "NOT SET": "❓ NOT SET",
              }
-        self.f.write(f"| {test.name} | {status_emoji.get(test.status, "unknown")} | {test.elapsed_time.total_seconds()} |\n")
+        self.f.write(f"| {test.name} | {status_emoji.get(test.status, 'unknown')} | {test.elapsed_time.total_seconds()} |\n")
 
     def end_suite(self,suite):
         if suite.tests:
@@ -46,4 +46,4 @@ def main():
     result.visit(visitor)
 
 if __name__ == "__main__":
-    main()
+    main()