AuthorityFactoryProxy changes for revisions 26211:26212

This change fixes a spelling error: "unknow" to "unknown". This correction is still present in Apache SIS. So we took this commit...

Command line:

svn diff --extensions "--unified --ignore-space-change --ignore-all-space --ignore-eol-style" -r26211:26212 https://svn.osgeo.org/geotools/trunk/modules/library/referencing/src/main/java/org/geotools/referencing/factory/AuthorityFactoryProxy.java
Revision 26211Revision 26212
* method will reduce the amount of tables to be queried.
* <p>
* This class is useful when the same {@code create} method need to be invoked often,
* but is unknow at compile time. It may also be used as a workaround for authority
* factories that don't implement the {@code createObject} method.
* <p>
* <b>Example:</b> The following code creates a proxy which will delegates its work to the
* method will reduce the amount of tables to be queried.
* <p>
* This class is useful when the same {@code create} method need to be invoked often,
* but is unknown at compile time. It may also be used as a workaround for authority
* factories that don't implement the {@code createObject} method.
* <p>
* <b>Example:</b> The following code creates a proxy which will delegates its work to the