Update 3 files

- /README.md
- /_data/ai-cache.json
- /feed.xslt.xml

feed.xslt.xml

@@ -101,7 +101,7 @@ https://nicolas-hoizey.com/feeds/all.xml
         </a>
       </h3>
       <small class="gray">
-        Published: <xsl:value-of select="pubDate" />
+        Published: <xsl:value-of select="substring(pubDate, 0, 17)" />
       </small>
       <p><xsl:value-of select="description"/></p>
     </div>