fix doc

documentation20/en/00.index/docs.md

@@ -29,7 +29,7 @@ TDengine is a highly efficient platform to store, query, and analyze time-series
 
 ## [Data Modeling](/model)
 
-- [Create a Library](/model#create-db): create a library for all data collection points with similar features
+- [Create a Database](/model#create-db): create a database for all data collection points with similar features
 - [Create a Super Table(STable)](/model#create-stable): create a STable for all data collection points with the same type
 - [Create a Table](/model#create-table): use STable as the template, to create a table for each data collecting point