Update Windows TARGETFILE matching

Author: jheysel-r7

modules/auxiliary/gather/solarwinds_servu_fileread_cve_2024_28995.rb

@@ -95,7 +95,7 @@ def run
       native_path_sep = '/'
       target_path_sep = '\\'
       target_filepath = datastore['TARGETFILE']
-    elsif datastore['TARGETFILE'].downcase.start_with? 'c:\\\\'
+    elsif datastore['TARGETFILE'][1,3] == ':\\\\'
       native_path_sep = '\\'
       target_path_sep = '/'
       target_filepath = datastore['TARGETFILE'][3..]