chore: fix some comments and spelling

Author: iccicci

packages/core/src/Serialization/Certificates/PoolRegistration.ts

@@ -170,7 +170,7 @@ export class PoolRegistration {
    * @param cert core PoolRegistrationCertificate object.
    */
   static fromCore(cert: Cardano.PoolRegistrationCertificate) {
-    return new PoolRegistration(PoolParams.fromCore(cert.poolParameters)); // TODO: Core type does not support script hash as credential, fix?
+    return new PoolRegistration(PoolParams.fromCore(cert.poolParameters));
   }
 
   /**

packages/projection/test/InMemory/storeStakePools.test.ts

@@ -3,7 +3,7 @@ import { InMemory, Mappers, ProjectionEvent } from '../../src';
 import { firstValueFrom, of } from 'rxjs';
 
 describe('InMemory.storeStakePools', () => {
-  it('adds pool updates and retirements on RollRorward, removes on RollBackward', async () => {
+  it('adds pool updates and retirements on RollForward, removes on RollBackward', async () => {
     const store = InMemory.createStore();
     const project = async (
       eventType: ChainSyncEventType,

packages/projection/test/operators/Mappers/certificates/withStakePools.test.ts

@@ -70,7 +70,7 @@ describe('withStakePools', () => {
     expect(result.stakePools.retirements[0].epoch).toEqual(4);
   });
 
-  it("omits pool retirement if it's folowed by a pool registration", async () => {
+  it("omits pool retirement if it's followed by a pool registration", async () => {
     const data: Mappers.WithCertificates & WithEpochNo = {
       certificates: [
         {