feat: set local path of workerSrc to PdfLoader (#101)

web/src/components/pdf-previewer/index.tsx

 
   return (
     <div className={styles.documentContainer}>
-      <PdfLoader url={url} beforeLoad={<Skeleton active />}>
+      <PdfLoader
+        url={url}
+        beforeLoad={<Skeleton active />}
+        workerSrc="/pdfjs-dist/pdf.worker.min.js"
+      >
         {(pdfDocument) => (
           <PdfHighlighter
             pdfDocument={pdfDocument}

web/src/pages/add-knowledge/components/knowledge-chunk/components/document-preview/preview.tsx

 
   return (
     <div className={styles.documentContainer}>
-      <PdfLoader url={url} beforeLoad={<Skeleton active />}>
+      <PdfLoader
+        url={url}
+        beforeLoad={<Skeleton active />}
+        workerSrc="/pdfjs-dist/pdf.worker.min.js"
+      >
         {(pdfDocument) => (
           <PdfHighlighter
             pdfDocument={pdfDocument}