doc: add more docs

.golangci.yml

@@ -1,11 +1,15 @@
 linters-settings:
   errcheck:
-    ignore: fmt:.*,io/ioutil:^Read.*
     ignoretests: true
 
   goimports:
     local-prefixes: github.com/fumiama/go-onebot-agent
 
+  forbidigo:
+    # Forbid the following identifiers
+    forbid:
+      - ^fmt\.Errorf$ # consider errors.Errorf in github.com/pkg/errors
+
 linters:
   # please, do not use `enable-all`: it's deprecated and will be removed soon.
   # inverted configuration with `enable-all` and `disable` is not scalable during updates of golangci-lint
@@ -46,7 +50,6 @@ linters:
     - forbidigo
     - makezero
 
-
 run:
   # default concurrency is a available CPU number.
   # concurrency: 4 # explicitly omit this value to fully utilize available resources.
@@ -66,3 +69,7 @@ output:
 issues:
   # Fix found issues (if it's supported by the linter)
   fix: true
+  exclude-use-default: false
+  exclude:
+    - "Error return value of .((os.)?std(out|err)..*|.*Close|.*Seek|.*Flush|os.Remove(All)?|.*print(f|ln)?|os.(Un)?Setenv). is not check"
+    - 'identifier ".*" contain non-ASCII character: U\+.*'