Typo fix (#3637)

diff --git a/examples/src/python/__init__.py b/examples/src/python/__init__.py
index 2130dac..7702d70 100644
--- a/examples/src/python/__init__.py
+++ b/examples/src/python/__init__.py
@@ -14,5 +14,5 @@
 # KIND, either express or implied.  See the License for the
 # specific language governing permissions and limitations
 # under the License.
-"""Excample python topologies"""
+"""Example python topologies"""
 __all__ = ['bolt', 'spout', 'misc', 'custom_grouping_topology', 'word_count_topology']