Docs: fix SAX-VSM/GrammarViz site links to new Hugo URLs

The project sites were rebuilt with Hugo, changing the URL structure
(the old Jekyll/Morea .html paths no longer resolve). Update the
README link to the current page.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Author: seninp

README.md

@@ -1,5 +1,5 @@
 ### R package "jmotif", provides an implementation of:
- * **[z-Normalization](https://jmotif.github.io/sax-vsm_site/morea/algorithm/znorm.html)** of time series data
+ * **[z-Normalization](https://jmotif.github.io/sax-vsm_site/algorithm/znorm/)** of time series data
  * **[PAA](https://github.com/jMotif/jmotif-R#20-piecewise-aggregate-approximation-ie-paa)**, i.e., Piecewise Aggregate Approximation
  * **[SAX](https://github.com/jMotif/jmotif-R#30-sax-transform)**, i.e., Symbolic Aggregate approXimation
  * **[HOT-SAX](https://github.com/jMotif/jmotif-R#70-hot-sax-algorithm-for-time-series-discord-discovery)**, an algorithm for the exact time series discord discovery