fix: Fix dead link to MTP-DB schema

paper/src/sections/020_MnMs.tex

@@ -190,7 +190,7 @@ \subsection{The Membrane Transport Protein Database}
 
 An overview of the database schema, with information on the type of data in every table, can be seen in Table \ref{tab:databaseSchema}.
 The actual database schema file is present in the GitHub repository at
-\href{https://github.com/TCP-Lab/MTP-DB/blob/main/src/db_rebuilder/daedalus/local_data/schema.sql}{this URL}.
+\href{https://github.com/TCP-Lab/MTP-DB/blob/main/src/daedalus/local_data/schema.sql}{this URL}.
 
 \subsection{Generation of Transporter Gene Lists}