Fix some typos.

Found with https://github.com/intgr/topy/
diff --git a/docs/hazmat/primitives/padding.rst b/docs/hazmat/primitives/padding.rst
index 83154c0..c020944 100644
--- a/docs/hazmat/primitives/padding.rst
+++ b/docs/hazmat/primitives/padding.rst
@@ -5,7 +5,7 @@
 
 .. currentmodule:: cryptography.hazmat.primitives.padding
 
-Padding is a way to take data that may or may not be be a multiple of the block
+Padding is a way to take data that may or may not be a multiple of the block
 size for a cipher and extend it out so that it is. This is required for many
 block cipher modes as they require the data to be encrypted to be an exact
 multiple of the block size.
diff --git a/tests/hazmat/bindings/test_openssl.py b/tests/hazmat/bindings/test_openssl.py
index 1dbd23b..58d7602 100644
--- a/tests/hazmat/bindings/test_openssl.py
+++ b/tests/hazmat/bindings/test_openssl.py
@@ -84,7 +84,7 @@
         with pytest.raises(RuntimeError):
             b._lock_cb(0, b.lib.CRYPTO_LOCK_SSL, "<test>", 1)
 
-        # errors shouldnt cause locking
+        # errors shouldn't cause locking
         assert lock.acquire(False)
         lock.release()
 
diff --git a/tests/test_utils.py b/tests/test_utils.py
index b50c21f..7a0b9e7 100644
--- a/tests/test_utils.py
+++ b/tests/test_utils.py
@@ -2638,7 +2638,7 @@
 
 
 def test_raises_unsupported_algorithm():
-    # Check that it doesnt assert if the right things are raised.
+    # Check that it doesn't assert if the right things are raised.
     with raises_unsupported_algorithm(
         _Reasons.BACKEND_MISSING_INTERFACE
     ) as exc_info: