Fix misleading log

SignalServiceKit/src/Loki/API/Onion Requests/OnionRequestAPI.swift

@@ -126,7 +126,7 @@ internal enum OnionRequestAPI {
     ///
     /// - Note: Exposed for testing purposes.
     internal static func getPath(excluding snode: LokiAPITarget) -> Promise<Path> {
-        guard pathSize >= 1 else { preconditionFailure("Cannot build path of size zero.") }
+        guard pathSize >= 1 else { preconditionFailure("Can't build path of size zero.") }
         // randomElement() uses the system's default random generator, which is cryptographically secure
         if paths.count >= pathCount {
             return Promise<Path> { seal in

SignalServiceKit/src/Loki/API/Onion Requests/OnionRequestAPITests.swift

@@ -24,7 +24,7 @@ class OnionRequestAPITests : XCTestCase {
                     failureCount += 1
                     seal.reject(error)
                 }.finally(on: OnionRequestAPI.workQueue) {
-                    print("[Loki] [Onion Request API] Success rate: \(successCount)/\(failureCount).")
+                    print("[Loki] [Onion Request API] Successes/Failures: \(successCount)/\(failureCount).")
                 }
                 return promise
             }