Add documentation examples for too-many-boolean-expressions (#7068)

Co-authored-by: Vladyslav Krylasov <vladyslav.krylasov@gmail.com>
Co-authored-by: Pierre Sassoulas <pierre.sassoulas@gmail.com>

Author: 3 people

doc/data/messages/t/too-many-boolean-expressions/bad.py

@@ -0,0 +1,4 @@
+def can_be_divided_by_two_and_are_not_zero(x, y, z):
+    # Maximum number of boolean expressions in an if statement (by default 5)
+    if (x and y and z) and (x % 2 == 0 and y % 2 == 0 and z % 2 == 0):  # [too-many-boolean-expressions]
+        pass

doc/data/messages/t/too-many-boolean-expressions/details.rst

@@ -1 +1,3 @@
-# This is a placeholder for correct code for this message.
+def can_be_divided_by_two_and_are_not_zero(x, y, z):
+    if all(i and i%2==0 for i in [x, y, z]):
+        pass