improve doc (based on review)

mongoengine/base/datastructures.py

@@ -217,7 +217,7 @@ class EmbeddedDocumentList(BaseList):
         Filters the list by only including embedded documents with the
         given keyword arguments.
 
-        This method only supports simple comparison (e.g: .filter(name='John Doe'))
+        This method only supports simple comparison (e.g. .filter(name='John Doe'))
         and does not support operators like __gte, __lte, __icontains like queryset.filter does
 
         :param kwargs: The keyword arguments corresponding to the fields to

mongoengine/fields.py

@@ -385,7 +385,7 @@ class DecimalField(BaseField):
         :param max_value: Validation rule for the maximum acceptable value.
         :param force_string: Store the value as a string (instead of a float).
          Be aware that this affects query sorting and operation like lte, gte (as string comparison is applied)
-         and some query operator won't work (e.g: inc, dec)
+         and some query operator won't work (e.g. inc, dec)
         :param precision: Number of decimal places to store.
         :param rounding: The rounding rule from the python decimal library:
 

mongoengine/mongodb_support.py

@@ -15,5 +15,5 @@ def get_mongodb_version():
 
     :return: tuple(int, int)
     """
-    version_list = get_connection().server_info()['versionArray'][:2]     # e.g: (3, 2)
+    version_list = get_connection().server_info()['versionArray'][:2]     # e.g. (3, 2)
     return tuple(version_list)