typo fixes

Author: Vishvajit Pathak

bigquery/query_builder.py

@@ -29,7 +29,7 @@ def render_query(dataset, tables, select=None, conditions=None,
  'comparators' maps to another ``dict`` containing the keys 'condition',
  'negate', and 'value'.
  If 'comparators' = {'condition': '>=', 'negate': False, 'value': 1},
- this example will be rdnered as 'foo >= FLOAT('1')' in the query.
+ this example will be rendered as 'foo >= FLOAT('1')' in the query.
  ``list`` of field names to group by
  order_by : dict, optional
  Keys = {'field', 'direction'}. `dict` should be formatted as
@@ -170,7 +170,7 @@ def _render_conditions(conditions):
  Parameters
  ----------
  conditions : list
- A list of dictionay items to filter a table.
+ A list of dictionary items to filter a table.
 
  Returns
  -------