adds refs to reference/options.txt that will serve as updated replacements for labels that point to the legacy mongo shell docs (#230)

Author: jmd-mongo

source/reference/options.txt

@@ -104,6 +104,8 @@ Connection Options
      the hostname does not match the ``SAN`` (or ``CN``), the
      |mdb-shell| shell fails to connect.
 
+.. _example-connect-mongosh-using-srv:
+
    For :manual:`DNS seedlist connections </reference/connection-string/#dns-seedlist-connection-format/>`, 
       Specify the connection protocol as ``mongodb+srv``, followed by
       the DNS SRV hostname record and any options. The ``authSource``
@@ -127,6 +129,9 @@ Connection Options
    :option:`--port <--port>` is not
    specified, the |mdb-shell| attempts to connect to port ``27017``.
 
+.. _mongosh-tls:
+.. _mongosh-ssl:
+
 TLS Options
 ~~~~~~~~~~~
 
@@ -330,6 +335,8 @@ TLS Options
    to use TLS certificates already available to your operating system
    without explicitly specifying those certificates to ``mongosh``.
 
+.. _mongosh-authentication-options:
+
 Authentication Options
 ----------------------
 
@@ -345,6 +352,8 @@ Authentication Options
    the |mdb-shell| uses the database specified in the connection
    string.
 
+.. _mongosh-authentication-mechanisms:
+
 .. option:: --authenticationMechanism <name>
 
    *Default*: SCRAM-SHA-1
@@ -463,6 +472,8 @@ Session Options
 
 .. disableImplicitSessions
 
+.. _mongosh-client-side-field-level-encryption-options:
+
 Client-Side Field Level Encryption Options
 ------------------------------------------