chore: modify tools/JinaReader label to Jina (#4908)

api/core/tools/provider/builtin/jina/jina.yaml

@@ -2,9 +2,9 @@ identity:
   author: Dify
   name: jina
   label:
-    en_US: JinaReader
+    en_US: Jina
-    zh_Hans: JinaReader
+    zh_Hans: Jina
-    pt_BR: JinaReader
+    pt_BR: Jina
   description:
     en_US: Convert any URL to an LLM-friendly input or perform searches on the web for grounding information. Experience improved output for your agent and RAG systems at no cost.
     zh_Hans: 将任何URL转换为LLM易读的输入或在网页上搜索引擎上搜索引擎。