Updating the README.md file with the new return types for extract_table_from_file_name and extract_schema_from_file_name

Author: JesperWisborgKrogh

README.md

@@ -1206,7 +1206,7 @@ Currently relies on the fact that a table data file will be within a specified d
 
 ##### Returns
 
-VARCHAR(512)
+VARCHAR(64)
 
 ##### Example
 ```SQL
@@ -1233,7 +1233,7 @@ Useful for when interacting with Performance Schema data concerning IO statistic
 
 ##### Returns
 
-VARCHAR(512)
+VARCHAR(64)
 
 ##### Example
 ```SQL