fixed documentation bugs

spring-framework-reference/src/expressions.xml

@@ -476,7 +476,7 @@ Boolean b = simple.booleanList.get(0);
       <para>The types of literal expressions supported are strings, dates,
       numeric values (int, real, and hex), boolean and null. Strings are
       delimited by single quotes. To put a single quote itself in a string use
-      the backslash character. The following listing shows simple usage of
+      two single quote characters. The following listing shows simple usage of
       literals. Typically they would not be used in isolation like this, but
       as part of a more complex expression, for example using a literal on one
       side of a logical comparison operator.</para>

spring-framework-reference/src/validation.xml

@@ -851,7 +851,7 @@ package org.springframework.core.convert.converter;
 
 public interface GenericConverter {
 
-    public Class<?>[][] getConvertibleTypes();
+    public Set<ConvertiblePair> getConvertibleTypes();
 
     Object convert(Object source, TypeDescriptor sourceType, TypeDescriptor targetType);