Update README.md

Author: andreiramani

README.md

@@ -3,7 +3,7 @@
 - pgvector v0.7.3 binary, compiled in Microsoft Windows with PostgreSQL 15 <br>
 - pgvector v0.7.4 binary, compiled in Microsoft Windows with PostgreSQL 16
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-Extracted zip file to "[[pg_installed folder]]\share\extension\"
+Extracted zip file to "[pg_installed folder]\share\extension\"
 <br><p></p>
 unofficial release.
 thanks to: Juris Vassa Ivandro @unej