Correcting documentation links

doc/introduction-to-mongo.tex

@@ -61,9 +61,7 @@
 
 \section{Introduction}
 
-\href{https://www.mongodb.com/}{MongoDB} is a NoSQL database that allows documents to be stored in BSON (Binary JavaScript Object Notation) format.  Documents can be inserted using JavaScript Object Notation (JSON).  JavaScript can be used to define a schema and query documents that are present in MongoDB.
-
-MongoDB provides interfaces for several programming languages, as well as a \texttt{mongo} shell.  Details of the interfaces are given at \href{https://api.mongodb.com/}{https://api.mongodb.com/}.  In this document, the Python programming interface is discussed.  The Python programming interface is documented at \href{https://api.mongodb.com/python/current/tutorial.html}{https://api.mongodb.com/python/current/tutorial.html}.
+\input{mongodb-introduction}
 
 \section{Typesetting and spaces}
 

doc/mongodb-introduction.tex

+\href{https://www.mongodb.com/}{MongoDB} is a NoSQL database that allows documents to be stored in BSON (Binary JavaScript Object Notation) format.  Documents can be inserted using JavaScript Object Notation (JSON).  JavaScript can be used to define a schema and query documents that are present in MongoDB.
+
+MongoDB provides interfaces for several programming languages, as well as the \href{https://www.mongodb.com/docs/mongodb-shell/}{MongoDB shell}.  Details of the interfaces are given at \href{https://www.mongodb.com/docs/drivers/}{https://www.mongodb.com/docs/drivers/}.  In this document, the Python programming interface is discussed.  The Python programming interface is documented at \href{https://www.mongodb.com/docs/languages/python/}{https://www.mongodb.com/docs/languages/python/}.
+
+\endinput
\ No newline at end of file