Fix links in FLTK docos.

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.1@1957 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

documentation/subclassing.html

@@ -27,7 +27,7 @@ virtual methods, and overriding some or all of these may be necessary.
 <UL><PRE>
 MyClass(int x, int y, int w, int h, const char *label = 0);
 </PRE></UL>
- This will allow the class to be used in <A href=fluid.html#fluid>FLUID</A>
+ This will allow the class to be used in <A href="fluid.html#FLUID">FLUID</A>
  without problems.
 <P>The constructor must call the constructor for the base class and
 pass the same arguments: </P>