Also tweak ascii border to match

Author: rogerbinns

apsw/ext.py

@@ -2113,7 +2113,7 @@ def do_row(row, sep: str, *, centre: bool = False, header: bool = False) -> None
     if rows:
         for row in rows:
             if multiline:
-                do_bar(["╞═╪╡", "├─┼┤"][which] if use_unicode else "+-++")
+                do_bar(["╞═╪╡", "├─┼┤"][which] if use_unicode else ["+=++", "+-++"][which])
                 which = 1
             do_row(row, "│" if use_unicode else "|")