fix: broken chat completion url (#2057)

Author: junjunjd

scripts/inference-providers/templates/task/text-generation.handlebars

@@ -2,7 +2,7 @@
 
 Generate text based on a prompt.
 
-If you are interested in a Chat Completion task, which generates a response based on a list of messages, check out the [`chat-completion`](./chat_completion) task.
+If you are interested in a Chat Completion task, which generates a response based on a list of messages, check out the [`chat-completion`](./chat-completion) task.
 
 {{{tips.linksToTaskPage.text-generation}}}