fix spelling #10078
diff --git a/Doc/library/string.rst b/Doc/library/string.rst
index f926924..b905d3a 100644
--- a/Doc/library/string.rst
+++ b/Doc/library/string.rst
@@ -448,7 +448,7 @@
| | from the significand, and the decimal point is also |
| | removed if there are no remaining digits following it. |
| | |
- | | Postive and negative infinity, positive and negative |
+ | | Positive and negative infinity, positive and negative |
| | zero, and nans, are formatted as ``inf``, ``-inf``, |
| | ``0``, ``-0`` and ``nan`` respectively, regardless of |
| | the precision. |