Add docs task

.mise.toml

 [tools]
-"go:golang.org/x/pkgsite/cmd/pkgsite" = "latest"
 go = "latest"
 gofumpt = "latest"
 
     "find dist -depth 1 -type d | xargs -r rm -r",
     "rm ./dist/config.yaml"
 ]
+
+[tasks.docs]
+description = "Run doc server"
+tools."go:golang.org/x/pkgsite/cmd/pkgsite" = "latest"
+run = "pkgsite -http 0.0.0.0:10000"