test: doc specifies log level capitalized

src/test_utils/nwaku.node.spec.ts

@@ -16,7 +16,7 @@ describe("nwaku", () => {
       "--rpc=true",
       "--rpc-admin=true",
       "--websocket-support=true",
-      "--log-level=debug",
+      "--log-level=DEBUG",
       "--ports-shift=42",
     ];
 

src/test_utils/nwaku.ts

@@ -56,13 +56,13 @@ export interface Args {
 }
 
 export enum LogLevel {
-  Error = "error",
-  Info = "info",
-  Warn = "warn",
-  Debug = "debug",
-  Trace = "trace",
-  Notice = "notice",
-  Fatal = "fatal",
+  Error = "ERROR",
+  Info = "INFO",
+  Warn = "WARN",
+  Debug = "DEBUG",
+  Trace = "TRACE",
+  Notice = "NOTICE",
+  Fatal = "FATAL",
 }
 
 export interface KeyPair {