chore: copy & paste friendly curl API example (#1305)

<img width="623" alt="image"
src="https://github.com/user-attachments/assets/f839e94b-a9e8-45ce-a03e-12cf962367b8">

- the commands are restructured in a way that the editable part is
always at the end of the snippet (especially annoying in multi-line
snippets)
- added the saving of the response of the Run to a `run.json `
- added convenience `jq` command to find the dataset in the Actor run
response
- removed (imo) unnecessary quotes
- squished the per command line breaks to save lines

Please, try it yourself before merging:

```
# Prepare Actor input
echo '{ "searchStringsArray": ["Apify"] }' > input.json

# Run the Actor and retreive its default dataset id.
curl -X POST -d @input.json -H 'Content-Type: application/json' \
  -s -o >(tee run.json) \
  https://api.apify.com/v2/acts/compass~crawler-google-places/runs?token=<YOUR_API_TOKEN>

# Find the defaultDatasetId in the API response 
cat run.json | jq -r .data.defaultDatasetId

# And pass it instead of <DATASET_ID>
curl https://api.apify.com/v2/datasets/<DATASET>/items?token=<YOUR_API_TOKEN>
```

src/pages/api/index.tsx

@@ -137,22 +137,13 @@ export default function Api() {
                 >
                     <ClientCodeWrapper>
                         <CodeBlock title="cURL" language='bash'>
-                            {`# Prepare Actor input
-cat > input.json <<'EOF'
-{
- // Define the input in JSON here
-}
-EOF
-
-# Run the Actor
-curl "https://api.apify.com/v2/acts/username~actorname/runs?token=<YOUR_API_TOKEN>" \\
-  -X POST \\
-  -d @input.json \\
-  -H 'Content-Type: application/json'
-
-# Use the defaultDatasetId from response and pass it instead of <DATASET_ID>
-curl "https://api.apify.com/v2/datasets/<DATASET_ID>/items?token=<YOUR_API_TOKEN>"`
-                            }
+                            {`# Prepare Actor input and run it synchronously
+echo '{ "searchStringsArray": ["Apify"] }' |
+curl -X POST -d @- \\
+  -H 'Content-Type: application/json' \\
+  -H 'Authorization: Bearer <YOUR_API_TOKEN>' \\
+  -L 'https://api.apify.com/v2/acts/compass~crawler-google-places/run-sync-get-dataset-items'
+                           `}
                         </CodeBlock>
                     </ClientCodeWrapper>
                 </SectionWrapper>