Fix link & typos, then use better CSV test data (#1635)

app/lakes/import.tsx

@@ -52,7 +52,7 @@ export default function TabImport() {
  </Link>
  </p>
  See{" "}
- <Link href="https:/brimdata/brim/wiki/Importing-CSV-JSON-Parquet-and-ZST">
+ <Link href="https:/brimdata/brim/wiki/Importing-CSV%2C-JSON%2C-Parquet%2C-and-ZST">
  docs
  </Link>{" "}
  for Zed platform support for{" "}

docs/Importing-CSV,-JSON,-Parquet,-and-ZST.md

@@ -32,7 +32,7 @@ directory shown below for each platform.
 | **macOS** | `/Applications/Brim.app/Contents/Resources/app.asar.unpacked/zdeps` |
 | **Linux** | `/opt/Brim/resources/app.asar.unpacked/zdeps` |
 
-Input file fomat can be specified via the `-i` option.
+Input file format can be specified via the `-i` option.
 
 ```
 $ zq -h
@@ -49,17 +49,17 @@ OPTIONS
 ```
 
 Here's an example `zq` command line on macOS to preprocess the test data
-from [addresses.csv](https://people.sc.fsu.edu/~jburkardt/data/csv/addresses.csv)
+from [testxlsx_converted.csv](https://raw.githubusercontent.com/wireservice/csvkit/master/examples/testxlsx_converted.csv)
 into ZNG.
 
 ```
-$ /Applications/Brim.app/Contents/Resources/app.asar.unpacked/zdeps/zq -i csv addresses.csv > addresses.zng
+$ /Applications/Brim.app/Contents/Resources/app.asar.unpacked/zdeps/zq -i csv testxlsx_converted.csv > testxlsx_converted.zng
 ```
 
-**Note:** You may want perform other preprocessing at this phase, such as
+> **Note:** You may want to perform other preprocessing at this phase, such as
 invoking [`fuse`](https:/brimdata/zed/tree/main/docs/language/processors#fuse).
 
-Now our `addresses.zng` can be imported in to Brim.
+Now our `testxlsx_converted.zng` can be imported into Brim.
 
 ![Imported CSV](media/Imported-CSV.png)
 
@@ -69,4 +69,3 @@ If you're struggling with importing alternate file formats or just have
 questions, we'd like to hear from you! Please join our
 [public Slack](https://www.brimsecurity.com/join-slack/)
 and speak up, or [open an issue](https:/brimdata/brim/wiki/Troubleshooting#opening-an-issue). Thanks!
-