Fix typo in  ymake.core.conf
@@ -1250,7 +1250,7 @@ module PY3TEST_BIN: _BASE_PY3_PROGRAM {
###
### The test module for Python 3.x based on py.test
###
-### This module is compatible only with PYTHON3-tagged modules and slects peers from multimodules accordingly.
+### This module is compatible only with PYTHON3-tagged modules and selects peers from multimodules accordingly.
### This module is only compatible with Arcadia Python build (to avoid tests duplication from Python2/3-tests). For non-Arcadia python use PYTEST.
###
### Documentation: https://wiki.yandex-team.ru/yatool/test/#testynapytest
