Apply suggestions from code review

Co-authored-by: Pete Edwards <[email protected]>

src/http/errorResponse.mock.ts

@@ -45,7 +45,7 @@ export function mockErrorResponse({
       url: url === null ? undefined : url ?? "https://example.org/resource",
       headers: headers === null ? undefined : headers ?? new Headers(),
     },
-    // The type assertion allows to create invalid error
+    // The type assertion allows us to create invalid error
     // responses for unit tests purpose.
   } as WithErrorResponse;
 }

src/http/problemDetails.mock.ts

@@ -42,7 +42,7 @@ export function mockProblemDetails({
       detail,
       instance,
     },
-    // The type assertion allows to null fields for unit tests.
+    // The type assertion allows us to null fields for unit tests.
   } as WithProblemDetails;
 }
 

src/http/problemDetails.ts

@@ -59,7 +59,7 @@ export type ProblemDetails = Readonly<{
    */
   detail?: string;
   /**
-   * A unique URL identifying the problem occurence.
+   * A unique URL identifying the problem occurrence.
    */
   instance?: URL;
 }>;