fix: Rename graph to agent #918 (#1785)

### What problem does this PR solve?

fix: Rename graph to agent #918

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

web/src/locales/en.ts

@@ -57,7 +57,7 @@ export default {
       setting: '用户设置',
       logout: '登出',
       fileManager: 'File Management',
-      flow: 'Graph',
+      flow: 'Agent',
     },
     knowledgeList: {
       welcome: 'Welcome back',
@@ -574,7 +574,6 @@ The above is the content you need to summarize.`,
       messageMsg: 'Please input message or delete this field.',
       addField: 'Add field',
       loop: 'Loop',
-      createFlow: 'Create a workflow',
       yes: 'Yes',
       no: 'No',
       key: 'key',
@@ -598,7 +597,7 @@ The above is the content you need to summarize.`,
       promptText: `Please summarize the following paragraphs. Be careful with the numbers, do not make things up. Paragraphs as following:
         {input}
   The above is the content you need to summarize.`,
-      createGraph: 'Create graph',
+      createGraph: 'Create agent',
       createFromTemplates: 'Create from templates',
       retrieval: 'Retrieval',
       generate: 'Generate',