user feedback (#893)

(cherry picked from commit b815a9c)

Author: mongoKart

source/fundamentals/gridfs.txt

@@ -103,11 +103,12 @@ Upload Files
 
 Use the ``openUploadStream()`` method from ``GridFSBucket`` to create an upload
 stream for a given file name. You can use the ``pipe()`` method to
-connect a Node.js ``fs`` read stream to the upload stream. The
+connect a Node.js read stream to the upload stream. The
 ``openUploadStream()`` method allows you to specify configuration information
-such as file chunk size and other field/value pairs to store as metadata. Set
-these options as parameters of ``openUploadStream()`` as shown in the
-following code snippet:
+such as file chunk size and other field/value pairs to store as metadata.
+
+The following example shows how to pipe a Node.js read stream, represented by the
+variable ``fs``, to the ``openUploadStream()`` method of a ``GridFSBucket`` instance: 
 
 .. code-block:: javascript
 

source/includes/aggregation/filtered-subset.js

@@ -8,7 +8,7 @@ async function run() {
     const aggDB = client.db("agg_tutorials_db");
 
     // start-collection
-    const personColl = await aggDB.collection("persons");
+    const personColl = aggDB.collection("persons");
     // end-collection
 
     // start-insert-persons

source/includes/aggregation/group-total.js

@@ -8,7 +8,7 @@ async function run() {
     const aggDB = client.db("agg_tutorials_db");
 
     // start-coll
-    const ordersColl = await aggDB.collection("orders");
+    const ordersColl = aggDB.collection("orders");
     // end-coll
 
     // start-insert-orders

source/includes/aggregation/multi-field-join.js

@@ -8,8 +8,8 @@ async function run() {
     const aggDB = client.db("agg_tutorials_db");
 
     // start-colls
-    const productsColl = await aggDB.collection("products");
-    const ordersColl = await aggDB.collection("orders");
+    const productsColl = aggDB.collection("products");
+    const ordersColl = aggDB.collection("orders");
     // end-colls
 
     // start-insert-products

source/includes/aggregation/one-to-one-join.js

@@ -8,8 +8,8 @@ async function run() {
     const aggDB = client.db("agg_tutorials_db");
 
     // start-colls
-    const ordersColl = await aggDB.collection("orders");
-    const productsColl = await aggDB.collection("products");
+    const ordersColl = aggDB.collection("orders");
+    const productsColl = aggDB.collection("products");
     // end-colls
 
     // start-insert-orders

source/includes/aggregation/unpack-arrays.js

@@ -8,7 +8,7 @@ async function run() {
     const aggDB = client.db("agg_tutorials_db");
 
     // start-coll
-    const ordersColl = await aggDB.collection("orders");
+    const ordersColl = aggDB.collection("orders");
     // end-coll
 
     // start-insert-orders