Autogenerate missing docs (#3514)

* Autogenerate missing docs

* Update ansi.md

* Rename question mark command docs

* Delete empty?.md

docs/commands/s3.md

@@ -0,0 +1,19 @@
+# s3
+Load S3 resource into a cell, convert to table if possible (avoid by appending '--raw' or '-R')
+
+## Usage
+```shell
+> s3 <RESOURCE> {flags} 
+ ```
+
+## Parameters
+* `<RESOURCE>` the RESOURCE to fetch the contents from
+
+## Flags
+* -h, --help: Display this help message
+* -e, --endpoint <any>: the endpoint info for the S3 resource, i.g., s3.ap-northeast-1.amazonaws.com or 10.1.1.1
+* -a, --access_key <any>: the access key when authenticating
+* -s, --secret_key <any>: the secret key when authenticating
+* -r, --region <any>: the region of the resource, default will use us-east-1
+* -R, --raw: fetch contents as text rather than a table
+