Typo fixes
diff --git a/Doc/library/sys.rst b/Doc/library/sys.rst
index 7dbf41e..6b88d61 100644
--- a/Doc/library/sys.rst
+++ b/Doc/library/sys.rst
@@ -266,7 +266,7 @@
+------------------------------+------------------------------------------+
| :const:`no_site` | -S |
+------------------------------+------------------------------------------+
- | :const:`ingnore_environment` | -E |
+ | :const:`ignore_environment` | -E |
+------------------------------+------------------------------------------+
| :const:`tabcheck` | -t or -tt |
+------------------------------+------------------------------------------+