add github workspace to form the root folder path correctly

index.ts

@@ -5,8 +5,8 @@ import path from 'path';
 const authKey = process.env.deepl_api_key as string;
 const translator = new deepl.Translator(authKey);
 const targetLanguages = process.env.target_languages?.split(',') as string[];
-const inputFilePath = process.env.input_file_path as string;
-const outputFileNamePrefix = process.env.output_file_name_prefix as string;
+const inputFilePath =  path.join(process.env.GITHUB_WORKSPACE as string, process.env.input_file_path as string);
+const outputFileNamePrefix = path.join(process.env.GITHUB_WORKSPACE as string,process.env.output_file_name_prefix as string);
 const termsToIgnoreForTranslation = process.env.ignore_terms?.split(',') || [] as string[];
 const startTagForNoTranslate = process.env.no_translate_start_tag as string;
 const endTagForNoTranslate = process.env.no_translate_end_tag as string;