Fix typo in _warnings.warn_explicit() docstring (GH-16625)

(cherry picked from commit 5dfbb4d50333e7a91fc0cd8c03a2f2f2cf56dbd9)

Co-authored-by: Hansraj Das <raj.das.136@gmail.com>
diff --git a/Python/_warnings.c b/Python/_warnings.c
index 0b19258..e02d283 100644
--- a/Python/_warnings.c
+++ b/Python/_warnings.c
@@ -1305,7 +1305,7 @@
 }
 
 PyDoc_STRVAR(warn_explicit_doc,
-"Low-level inferface to warnings functionality.");
+"Low-level interface to warnings functionality.");
 
 static PyMethodDef warnings_functions[] = {
     WARNINGS_WARN_METHODDEF