Use in-process instead of embedded (#222)

* Use in-process instead of embedded

Author: auxten

README.md

@@ -18,7 +18,7 @@
 
 [中文](README-zh.md)
 
-> chDB is an embedded SQL OLAP Engine powered by ClickHouse  [^1]
+> chDB is an in-process SQL OLAP Engine powered by ClickHouse  [^1]
 > For more details: [The birth of chDB](https://auxten.com/the-birth-of-chdb/)