Fix many spell glitches

This affects mostly docstrings, except in orm/events.py::dispose_collection()
where one parameter gets renamed: given that the method is
empty, it seemed reasonable to me to fix that too.

Closes: #4440
Pull-request: https://github.com/sqlalchemy/sqlalchemy/pull/4440
Pull-request-sha: 779ed75acb6142e1f1daac467b5b14134529bb4b

Change-Id: Ic0553fe97853054b09c2453af76d96363de6eb0e

1 files changed, 3 insertions, 3 deletions

diff --git a/test/orm/inheritance/test_basic.py b/test/orm/inheritance/test_basic.py
index ab6116256..6c9da92d2 100644
--- a/test/orm/inheritance/test_basic.py
+++ b/test/orm/inheritance/test_basic.py
@@ -384,7 +384,7 @@ class PolymorphicOnNotLocalTest(fixtures.MappedTest):
             polymorphic_identity=0,
         )
 
-    def test_polymorpic_on_not_in_with_poly(self):
+    def test_polymorphic_on_not_in_with_poly(self):
         t2, t1 = self.tables.t2, self.tables.t1
         Parent = self.classes.Parent
 
@@ -2300,7 +2300,7 @@ class OverrideColKeyTest(fixtures.MappedTest):
         )
 
     def test_plain_descriptor(self):
-        """test that descriptors prevent inheritance from propigating
+        """test that descriptors prevent inheritance from propagating
         properties to subclasses."""
 
         class Base(object):
@@ -2321,7 +2321,7 @@ class OverrideColKeyTest(fixtures.MappedTest):
         assert sess.query(Sub).one().data == "im the data"
 
     def test_custom_descriptor(self):
-        """test that descriptors prevent inheritance from propigating
+        """test that descriptors prevent inheritance from propagating
         properties to subclasses."""
 
         class MyDesc(object):