Use correct internal name for plugin

Signed-off-by: Philippe Ombredanne <[email protected]>

Co-authored-by: Keshav Priyadarshi <[email protected]>

setup.cfg

@@ -55,7 +55,7 @@ where = src
 scancode_scan =
     source_symbol = source_inspector.symbols_ctags:CtagsSymbolScannerPlugin
     source_string = source_inspector.strings_xgettext:XgettextStringScannerPlugin
-    pygments_symbol = source_inspector.symbols_pygments:PygmentsSymbolsAndStringScannerPlugin
+    pygments_symbol_and_string = source_inspector.symbols_pygments:PygmentsSymbolsAndStringScannerPlugin
 
 
 [options.extras_require]