Small typo fixes and things I noticed while onboarding (#352)

I changed Workflow client to Client.workflow because
that's what the SDK docs suggest to do in
https://typescript.temporal.io/api/classes/client.WorkflowClient.
I made the corresponding code change in the code repo
at https://github.com/temporalio/money-transfer-project-template-ts/
so we should be good there

docs/getting_started/python/hello_world_in_python/index.md

@@ -164,7 +164,7 @@ You can pass multiple inputs to a Workflow, but it's a good practice to send a s
 
 :::
 
-The method calls the `workflow.execute_activty` method which executes an Activity called `say_hello`, which you'll define next. `workflow.execute_activity` needs the [Activity Type](https://docs.temporal.io/activities#activity-type), the input parameters for the Activity, and a [Start-To-Close Timeout](https://docs.temporal.io/activities#start-to-close-timeout) or [Schedule-To-Close Timeout](https://docs.temporal.io/concepts/what-is-a-schedule-to-close-timeout).
+The method calls the `workflow.execute_activity` method which executes an Activity called `say_hello`, which you'll define next. `workflow.execute_activity` needs the [Activity Type](https://docs.temporal.io/activities#activity-type), the input parameters for the Activity, and a [Start-To-Close Timeout](https://docs.temporal.io/activities#start-to-close-timeout) or [Schedule-To-Close Timeout](https://docs.temporal.io/concepts/what-is-a-schedule-to-close-timeout).
 
 Finally, the `run` method returns the result of the Activity Execution.
 

docs/getting_started/typescript/first_program_in_typescript/index.md

@@ -307,15 +307,15 @@ In this tutorial, the file `client.ts` contains a program that connects to the T
 <!--SNIPSTART money-transfer-project-template-ts-start-workflow-->
 [src/client.ts](https://github.com/temporalio/money-transfer-project-template-ts/blob/main/src/client.ts)
 ```ts
-import { Connection, WorkflowClient } from '@temporalio/client';
+import { Connection, Client } from '@temporalio/client';
 import { moneyTransfer } from './workflows';
 import type { PaymentDetails } from './shared';
 
 import { namespace, taskQueueName } from './shared';
 
 async function run() {
   const connection = await Connection.connect();
-  const client = new WorkflowClient({ connection, namespace });
+  const client = new Client({ connection, namespace });
 
   const details: PaymentDetails = {
     amount: 400,
@@ -328,7 +328,7 @@ async function run() {
     `Starting transfer from account ${details.sourceAccount} to account ${details.targetAccount} for $${details.amount}`
   );
 
-  const handle = await client.start(moneyTransfer, {
+  const handle = await client.workflow.start(moneyTransfer, {
     args: [details],
     taskQueue: taskQueueName,
     workflowId: 'pay-invoice-801',