Rename thread to _thread and dummy_thread to _dummy_thread. Issue #2875.
diff --git a/Misc/cheatsheet b/Misc/cheatsheet
index d81897f..c383e4a 100644
--- a/Misc/cheatsheet
+++ b/Misc/cheatsheet
@@ -1988,8 +1988,8 @@
             re                  Functions useful for working with regular expressions
             string              Useful string and characters functions and exceptions
             random              Mersenne Twister pseudo-random number generator
-            thread              Low-level primitives for working with process threads
-            threading           idem, new recommanded interface.
+            _thread             Low-level primitives for working with process threads
+            threading           idem, new recommended interface.
 
 * Unix/Posix *