Update config docs for TUS and others (#251)

pkg/flagset/frontend.go

@@ -162,21 +162,21 @@ func FrontendWithConfig(cfg *config.Config) []cli.Flag {
 		&cli.BoolFlag{
 			Name:        "upload-disable-tus",
 			Value:       false,
-			Usage:       "Tells clients to not use TUS by disabling the capability (this doesn't disable the endpoints)",
+			Usage:       "Disables TUS upload mechanism",
 			EnvVars:     []string{"REVA_FRONTEND_UPLOAD_DISABLE_TUS"},
 			Destination: &cfg.Reva.UploadDisableTus,
 		},
 		&cli.IntFlag{
 			Name:        "upload-max-chunk-size",
 			Value:       0,
-			Usage:       "Max chunk size in bytes to advertise to clients through capabilities",
+			Usage:       "Max chunk size in bytes to advertise to clients through capabilities, or 0 for unlimited",
 			EnvVars:     []string{"REVA_FRONTEND_UPLOAD_MAX_CHUNK_SIZE"},
 			Destination: &cfg.Reva.UploadMaxChunkSize,
 		},
 		&cli.StringFlag{
 			Name:        "upload-http-method-override",
 			Value:       "",
-			Usage:       "Specify an HTTP method (ex: POST) to use when uploading in case OPTIONS and PATCH are not available",
+			Usage:       "Specify an HTTP method (ex: POST) that clients should to use when uploading instead of PATCH",
 			EnvVars:     []string{"REVA_FRONTEND_UPLOAD_HTTP_METHOD_OVERRIDE"},
 			Destination: &cfg.Reva.UploadHTTPMethodOverride,
 		},