[yaml] - fix windowing link (#37167)

Author: derrickaw

sdks/python/apache_beam/yaml/yaml_provider.py

@@ -1063,7 +1063,7 @@ class WindowInto(beam.PTransform):
            size: 30s
 
     Note that any Yaml transform can have a
-    [windowing parameter](https://github.com/apache/beam/blob/master/sdks/python/apache_beam/yaml/README.md#windowing),
+    [windowing parameter](https://beam.apache.org/documentation/sdks/yaml/#windowing),
     which is applied to its inputs (if any) or outputs (if there are no inputs)
     which means that explicit WindowInto operations are not typically needed.