chore: place image correctly

Author: frectonz

README.md

@@ -1,5 +1,5 @@
-<img src="./logo.jpeg" alt="pg-when-logo" width="150" align="right" style="margin: 0 0 1em 1em;"/>
-
 # pg-when
 
+<img src="./logo.jpeg" alt="pg-when-logo" width="512" align="right" style="margin: 0 0 1em 1em;"/>
+
 A PostgreSQL extension for creating time values with natural language.