Add more links for Oracle DB XE

Author: cjbj

doc/api.md

@@ -2909,7 +2909,7 @@ Attribute           | Description
 `configDir`         | This specifies the directory in which the [Optional Oracle Net Configuration](#tnsadmin) and [Optional Oracle Client Configuration](#oraaccess) files reside.  It is equivalent to setting the Oracle environment variable `TNS_ADMIN` to this value.  Any value in that environment variable prior to the call to `oracledb.initOracleClient()` is ignored. On Windows, remember to double each backslash used as a directory separator.  If `configDir` is not set, Oracle's default configuration file [search heuristics](#tnsadmin) are used.
 `driverName`        | This specifies the driver name value shown in database views, such as `V$SESSION_CONNECT_INFO`.  It can be used by applications to identify themselves for tracing and monitoring purposes.  The convention is to separate the product name from the product version by a colon and single space characters.  If this attribute is not specified, the value "node-oracledb : *version*" is used. See [Other Node-oracledb Initialization](#otherinit).
 `errorUrl`          | This specifies the URL that is included in the node-oracledb exception message if the Oracle Client libraries cannot be loaded.  This allows applications that use node-oracledb to refer users to application-specific installation instructions.  If this attribute is not specified, then the [node-oracledb installation instructions][2] URL is used.  See [Other Node-oracledb Initialization](#otherinit).
-`libDir`            | This specifies the directory containing the Oracle Client libraries.  If `libDir` is not specified, the default library search mechanism is used.  If your client libraries are in a full Oracle Client or Oracle Database installation, such as Oracle Database "XE" Express Edition, then you must have previously set environment variables like `ORACLE_HOME` before calling `initOracleClient()`.  On Windows, remember to double each backslash used as a directory separator. See [Locating the Oracle Client Libraries](#oracleclientloading).
+`libDir`            | This specifies the directory containing the Oracle Client libraries.  If `libDir` is not specified, the default library search mechanism is used.  If your client libraries are in a full Oracle Client or Oracle Database installation, such as [Oracle Database "XE" Express Edition][130], then you must have previously set environment variables like `ORACLE_HOME` before calling `initOracleClient()`.  On Windows, remember to double each backslash used as a directory separator. See [Locating the Oracle Client Libraries](#oracleclientloading).
 
 
 On Linux, ensure a `libclntsh.so` file exists.  On macOS ensure a
@@ -8215,8 +8215,8 @@ Node-oracledb looks for the Oracle Client libraries as follows:
       call to [`oracledb.initOracleClient()`](#odbinitoracleclient).  This
       directory should contain the libraries from an unzipped Instant Client
       'Basic' or 'Basic Light' package.  If you pass the library directory from
-      a full client or database installation, such as Oracle Database "XE"
-      Express Edition, then you will need to have previously set your
+      a full client or database installation, such as [Oracle Database "XE"
+      Express Edition][130], then you will need to have previously set your
       environment to use that software installation otherwise files such as
       message files will not be located.  If the Oracle Client libraries cannot
       be loaded from `libDir`, then an error is thrown.
@@ -8261,8 +8261,8 @@ Node-oracledb looks for the Oracle Client libraries as follows:
       i.e. configured with `ldconfig` or set in `LD_LIBRARY_PATH`.  This
       directory should contain the libraries from an unzipped Instant Client
       'Basic' or 'Basic Light' package.  If you pass the library directory from
-      a full client or database installation, such as Oracle Database "XE"
-      Express Edition then you will need to have previously set the
+      a full client or database installation, such as [Oracle Database "XE"
+      Express Edition][130] then you will need to have previously set the
       `ORACLE_HOME` environment variable.  If the Oracle Client libraries cannot
       be loaded from `libDir`, then an error is thrown.
 
@@ -17694,7 +17694,7 @@ Oracle Linux.
 
 To get a free database hosted in Oracle Cloud, see [Oracle Cloud Free
 Tier][162].  If you want to use your own database, installing the free [Oracle
-Database 'XE' Express Edition][130] is quick and easy.  Other database editions
+Database "XE" Express Edition][130] is quick and easy.  Other database editions
 may be downloaded [here][154]. Dockerfiles for Oracle Database and Oracle
 Instant Client are on [github.com/oracle/docker-images][155].