docs: conditional steps overview

doc/configuring.rst

@@ -441,9 +441,9 @@ If any of them is missing or not set in current environment, the step will be ex
 Conditional steps
 ---------------------
 
-Conditional step is a :class:`Step` object, that has ``if_succeeded`` and/or ``if_failed`` parameters with other steps assigned.
-If the conditional step succeed, then the step from the ``if_succeeded`` parameter will be executed.
-If the conditional step fail, the step from the ``if_failed`` parameter will be executed instead.
+Conditional step is a :class:`Step` object, that has ``if_succeeded`` or ``if_failed`` parameters with other steps assigned.
+If the conditional step succeeds, then the step from the ``if_succeeded`` parameter will be executed.
+If the conditional step fails, the step from the ``if_failed`` parameter will be executed instead.
 
 Configuration example:
 
@@ -505,5 +505,5 @@ In general, conditional steps behave as any other regular steps, but here are so
     * Only one branch step will be executed
     * Both branches' artifacts will be checked for existence before the steps execution
     * Artifacts collection or any other side-effects will not be triggered for non-executed branch step
-    * If chosen branch step is not set, nothing will happen (e.g. conditional step failed, but ``Step.if_failed`` was not set)
+    * If chosen branch step is not set, nothing will happen. E.g. conditional step failed, but ``Step.if_failed`` was not set
     * Only one branch step will be counted for each conditional step at calculating steps numbering and total count