docs: add parallel example (#96)

README.md

@@ -28,6 +28,13 @@ await $`echo 5`; // outputs: 5
 
 // more complex example outputting 1 to stdout and 2 to stderr
 await $`echo 1 && deno eval 'console.error(2);'`;
+
+// parallel
+await Promise.all([
+  $`sleep 1 ; echo 1`,
+  $`sleep 2 ; echo 2`,
+  $`sleep 3 ; echo 3`,
+]);
 ```
 
 ### Getting output

src/common.ts

@@ -177,7 +177,7 @@ export async function safeLstat(path: string) {
   }
 }
 
-/** lstate that doesn't throw when the path is not found. */
+/** lstat that doesn't throw when the path is not found. */
 export function safeLstatSync(path: string) {
   try {
     return Deno.lstatSync(path);