fix: move table separator under the header

The Profile stats tables are misinterepreted by the MarkDown parsers
(e.g. by GitHub) because it doesn't follow the spec for the MD table.
Move the separator (|-|-|-|) to follow the table header
(|Profile|decoder|decoder|) to fix parsing of these tables.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>

Author: lumag

fluster/fluster.py

@@ -701,10 +701,11 @@ def _profile_stats(
             }
 
             if vectors_passed_per_profile_per_decoder:
-                output = separator
-                output += "\n|Profile|"
+                output = "|Profile|"
                 for decoder, _ in results:
                     output += f"{decoder.name}|"
+                output += "\n"
+                output += separator
 
             for profile in vectors_passed_per_profile_per_decoder.keys():
                 for decoder, _ in results: