fix(doctests): correct pfAdd return values and replace quit with close

- Fix dt-hll.js: pfAdd returns 1 instead of true in comments and assertions
- Fix dt-hash.js and dt-hll.js: replace deprecated client.quit() with client.close()

Author: PavelPashov

doctests/dt-hash.js

@@ -94,5 +94,5 @@ assert.equal(res14, 1);
 assert.equal(res15, 1);
 assert.equal(res16, '3');
 assert.deepEqual(res17, ['1', '1']);
-await client.quit();
+await client.close();
 // REMOVE_END

doctests/dt-hll.js

@@ -13,13 +13,13 @@ await client.flushDb();
 
 // STEP_START pfadd
 const res1 = await client.pfAdd('bikes', ['Hyperion', 'Deimos', 'Phoebe', 'Quaoar']);
-console.log(res1);  // >>> true
+console.log(res1);  // >>> 1
 
 const res2 = await client.pfCount('bikes');
 console.log(res2);  // >>> 4
 
 const res3 = await client.pfAdd('commuter_bikes', ['Salacia', 'Mimas', 'Quaoar']);
-console.log(res3);  // >>> true
+console.log(res3);  // >>> 1
 
 const res4 = await client.pfMerge('all_bikes', ['bikes', 'commuter_bikes']);
 console.log(res4);  // >>> OK
@@ -29,10 +29,10 @@ console.log(res5);  // >>> 6
 // STEP_END
 
 // REMOVE_START
-assert.equal(res1, true)
+assert.equal(res1, 1)
 assert.equal(res2, 4)
-assert.equal(res3, true)
+assert.equal(res3, 1)
 assert.equal(res4, 'OK')
 assert.equal(res5, 6)
-await client.quit();
+await client.close();
 // REMOVE_END