update docs

docs/en/docs/custom/overwrite.md

@@ -1 +1,8 @@
 # Override builtin pages and widgets
+
+If you want override the builtin pages and widgets template, you can create a template in your own template folders same
+path as the builtin.
+
+For example, the path of builtin layout template is `templates/layout.html`, you can create a template also
+named `layout.html` and put it in your template folders. The easiest way to override is just to copy the builtin
+template content then modify the content yourself.

docs/en/docs/custom/page.md

@@ -1 +1,56 @@
 # Custom Page
+
+It is easy to create custom pages.
+
+## Template folders
+
+You should configure your template folders when configure `fastapi-admin`.
+
+```python
+from fastapi import FastAPI
+from fastapi_admin.app import app as admin_app
+
+app = FastAPI()
+
+
+@app.on_event("startup")
+async def startup():
+    await admin_app.configure(template_folders=["templates"])
+
+```
+
+## Write router
+
+Then write a router to render the template.
+
+```python
+from fastapi_admin.app import app as admin_app
+from fastapi_admin.template import templates
+from starlette.requests import Request
+
+
+@admin_app.get("/")
+async def home(request: Request):
+    return templates.TemplateResponse("dashboard.html", context={"request": request})
+```
+
+Don't forget to create the template `dashboard.html` and write content.
+
+## Register resource
+
+Finally, register it as a `Link` resource.
+
+```python
+from fastapi_admin.app import app as admin_app
+from fastapi_admin.resources import Link
+
+
+@admin_app.register
+class Dashboard(Link):
+    label = "Dashboard"
+    icon = "fas fa-home"
+    url = "/admin"
+```
+
+That's all, if you are a superuser, you can see a menu in navbar now, otherwise you need give the admin permission of
+the resource.

docs/en/docs/pro/sponsor.md

@@ -1,12 +1,12 @@
 # Sponsor
 
-The pro version is just for the sponsors. As a sponsor, you will get source code or be invited
-to [fastapi-admin](https://github.com/fastapi-admin) organization as an `outside collaborator with readonly access`, and
-you can get the pro features and get updates for a time.
+The pro version is just for the sponsors. As a sponsor, you will be invited
+to [fastapi-admin](https://github.com/fastapi-admin) organization as an **outside collaborator with readonly access**,
+and you can get the pro features and get updates for a time.
 
 ## How to become a sponsor
 
-Sponsor Link: <https://sponsor.long2ice.cn>
+Sponsor Link: **<https://sponsor.long2ice.cn>**
 
 You can choose any sponsor way you like. After sponsor, you can email me <long2ice@gmail.com> with your GitHub account
 and sponsor way and account, then I will invite you to join [fastapi-admin](https://github.com/fastapi-admin)