docsp-30967 - add comment option (#167)

Author: mongoKart

source/configuration/read.txt

@@ -21,7 +21,6 @@ You can configure the following properties to read from MongoDB:
 
 .. note::
 
-
    If you use ``SparkConf`` to set the connector's read configurations,
    prefix ``spark.mongodb.read.`` to each property.
 
@@ -31,15 +30,7 @@ You can configure the following properties to read from MongoDB:
 
    * - Property name
      - Description
-
-   * - ``mongoClientFactory``
-     - | MongoClientFactory configuration key.
-       | You can specify a custom implementation which must implement the
-         ``com.mongodb.spark.sql.connector.connection.MongoClientFactory``
-         interface.
-       |
-       | **Default:** ``com.mongodb.spark.sql.connector.connection.DefaultMongoClientFactory``
-
+   
    * - ``connection.uri``
      - | **Required.**
        | The connection string configuration key.
@@ -54,6 +45,20 @@ You can configure the following properties to read from MongoDB:
      - | **Required.**
        | The collection name configuration.
 
+   * - ``comment``
+     - | The comment to append to the read operation. Comments appear in the 
+         :manual:`output of the Database Profiler. </reference/database-profiler>`
+       |
+       | **Default:** None 
+
+   * - ``mongoClientFactory``
+     - | MongoClientFactory configuration key.
+       | You can specify a custom implementation which must implement the
+         ``com.mongodb.spark.sql.connector.connection.MongoClientFactory``
+         interface.
+       |
+       | **Default:** ``com.mongodb.spark.sql.connector.connection.DefaultMongoClientFactory``
+
    * - ``partitioner``
      - | The partitioner full class name.
 

source/configuration/write.txt

@@ -30,27 +30,33 @@ The following options for writing to MongoDB are available:
 
    * - Property name
      - Description
+   
+   * - ``connection.uri``
+     - | **Required.**
+       | The connection string configuration key.
+       |
+       | **Default:** ``mongodb://localhost:27017/``
+
+   * - ``database``
+     - | **Required.**
+       | The database name configuration.
 
    * - ``collection``
      - | **Required.**
        | The collection name configuration.
 
-   * - ``connection.uri``
-     - | **Required.**
-       | The connection string configuration key.
+   * - ``comment``
+     - | The comment to append to the write operation. Comments appear in the 
+         :manual:`output of the Database Profiler. </reference/database-profiler>`
        |
-       | **Default:** ``mongodb://localhost:27017/``
+       | **Default:** None 
 
    * - ``convertJson``
      - | When ``true``, the connector parses the string and converts extended JSON
          into BSON.
        |
        | **Default:** ``false``
-
-   * - ``database``
-     - | **Required.**
-       | The database name configuration.
-
+   
    * - ``idFieldList``
      - | Field or list of fields by which to split the collection data. To
          specify more than one field, separate them using a comma as shown