Add support markdown

src/assets/locale/en/knowledge.json

@@ -32,7 +32,7 @@
         "uploadFile": {
             "label": "Upload File",
             "uploadText": "Drag and drop a file here or click to upload",
-            "uploadHint": "Supported file types: .pdf, .csv, .txt",
+            "uploadHint": "Supported file types: .pdf, .csv, .txt, .md",
             "required": "File is required"
         },
         "submit": "Submit",

src/assets/locale/ml/knowledge.json

@@ -32,7 +32,7 @@
         "uploadFile": {
             "label": "ഫയല്‍ അപ്‌ലോഡ് ചെയ്യുക",
             "uploadText": "ഇവിടെ ഒരു ഫയല്‍ എടുത്തിടുക അല്ലെങ്കില്‍ അപ്‌ലോഡ് ചെയ്യാന്‍ ക്ലിക്ക് ചെയ്യുക",
-            "uploadHint": "പിന്തുണയുള്ള ഫയല്‍ തരങ്ങള്‍: .pdf, .csv, .txt",
+            "uploadHint": "പിന്തുണയുള്ള ഫയല്‍ തരങ്ങള്‍: .pdf, .csv, .txt, .md",
             "required": "ഫയല്‍ ആവശ്യമാണ്"
         },
         "submit": "സമര്‍പ്പിക്കുക",

src/assets/locale/zh/knowledge.json

@@ -32,7 +32,7 @@
         "uploadFile": {
             "label": "上传文件",
             "uploadText": "将文件拖放到此处或点击上传",
-            "uploadHint": "支持的文件类型: .pdf, .csv, .txt",
+            "uploadHint": "支持的文件类型: .pdf, .csv, .txt, .md",
             "required": "文件是必需的"
         },
         "submit": "提交",