MW PR fixes 1

Author: rustagir

source/fundamentals/aggregation.txt

@@ -20,9 +20,9 @@ In this guide, you can learn how to use **aggregation operations** in
 the {+driver-short+}.
 
 Aggregation operations process data in your MongoDB collections and
-return computed results. MongoDB's Aggregation pipeline, part of the
-Query API, is modeled on the concept of data processing pipelines.
-Documents enter a multi-staged pipeline that transforms the documents
+return computed results. MongoDB's aggregation pipeline, which is part of the
+Query API, is modeled on the concept of data-processing pipelines.
+Documents enter a multi-stage pipeline that transforms the documents
 into an aggregated result. 
 
 .. sharedinclude:: dbx/agg-tutorials-manual-tip.rst
@@ -34,11 +34,11 @@ into an aggregated result.
 Analogy
 ~~~~~~~
 
-Another way to think of aggregation is like a car factory. Within the
-car factory is an assembly line, along which are assembly stations with
-specialized tools to do a specific job, like drills and welders. Raw
-parts enter the factory, which are then transformed and assembled into a
-finished product.
+The functionality of an aggregation is similar to what occurs in a car
+factory. Within the car factory is an assembly line, along which are
+assembly stations with specialized tools to do a specific job, like
+drills and welders. Raw parts enter the factory, and the factory
+transforms them and assembles them into a finished product.
 
 The **aggregation pipeline** is the assembly line, **aggregation
 stages** are the assembly stations, and **operator expressions** are the
@@ -128,9 +128,10 @@ In the following example, the aggregation pipeline:
 - Uses a :manual:`$group </reference/operator/aggregation/group/>` stage to group the matching documents by the ``stars``
   field, accumulating a count of documents for each distinct value of ``stars``.
 
-.. seealso::
+.. tip::
 
-   You can build the expressions used in this example using the :ref:`aggregation builders <aggregates-builders>`.
+   You can build the expressions used in this example by using the
+   :ref:`aggregation builders <aggregates-builders>`.
 
 .. io-code-block::