[Doc] Update doc url link (#5781)

Drop `dev` suffix for doc url.
Rename url to `https://docs.vllm.ai/projects/ascend`

- vLLM version: v0.13.0
- vLLM main:
2f4e6548ef

Signed-off-by: wangxiyuan <wangxiyuan1007@gmail.com>

.github/ISSUE_TEMPLATE/110-user-story.yml

@@ -1,5 +1,5 @@
 name: 📚 User Story
-description: Apply for an user story to be displayed on https://vllm-ascend.readthedocs.io/en/latest/community/user_stories/index.html
+description: Apply for an user story to be displayed on https://docs.vllm.ai/projects/ascend/en/latest/community/user_stories/index.html
 title: "[User Story]: "
 labels: ["user-story"]
 

.github/ISSUE_TEMPLATE/600-new-model.yml

@@ -9,7 +9,7 @@ body:
     value: >
       #### Before submitting an issue, please make sure the issue hasn't been already addressed by searching through [the existing and past issues](https://github.com/vllm-project/vllm-ascend/issues?q=is%3Aissue+sort%3Acreated-desc+).
 
-      #### We also highly recommend you read https://vllm-ascend.readthedocs.io/en/latest/user_guide/supported_models.html first to know which model already supported.
+      #### We also highly recommend you read https://docs.vllm.ai/projects/ascend/en/latest/user_guide/supported_models.html first to know which model already supported.
 - type: textarea
   attributes:
     label: The model to consider.
@@ -21,7 +21,7 @@ body:
   attributes:
     label: The closest model vllm already supports.
     description: >
-      Here is the list of models already supported by vllm: https://vllm-ascend.readthedocs.io/en/latest/user_guide/supported_models.html . Which model is the most similar to the model you want to add support for?
+      Here is the list of models already supported by vllm: https://docs.vllm.ai/projects/ascend/en/latest/user_guide/supported_models.html . Which model is the most similar to the model you want to add support for?
 - type: textarea
   attributes:
     label: What's your difficulty of supporting the model you want?