fixup uhi docs

Author: siliataider

bindings/pyroot/pythonizations/python/ROOT/_pythonization/_uhi/index.md

@@ -4,7 +4,7 @@
 
 # ROOT Histograms & UHI
 
-ROOT histograms implement the [Unified Histogram Interface (UHI)](https://uhi.readthedocs.io/en/latest/index.html)a standard protocol that makes ROOT histograms interoperable with the broader Python
+ROOT histograms implement the [Unified Histogram Interface (UHI)](https://uhi.readthedocs.io/en/latest/index.html), a standard protocol that makes ROOT histograms interoperable with the broader Python
 scientific ecosystem. This compliance standardizes histogram operations, making tasks like plotting, indexing, and slicing more intuitive and consistent.
 
 \note UHI support is available for all [`TH1`](https://root.cern.ch/doc/master/classTH1.html)-derived
@@ -176,4 +176,4 @@ ob = json.dumps(h_root, default=uhi.io.json.default)
 # JSON → any UHI-compatible library
 ir     = json.loads(ob, object_hook=uhi.io.json.object_hook)
 h_hist = hist.Hist(ir)
-``~~~``
+```