Remove duplicate words in documentation and polish Javadoc

spring-expression/src/main/java/org/springframework/expression/EvaluationContext.java

@@ -86,8 +86,8 @@ public interface EvaluationContext {
 
 	/**
 	 * Set a named variable within this evaluation context to a specified value.
-	 * @param name variable to set
-	 * @param value value to be placed in the variable
+	 * @param name the name of the variable to set
+	 * @param value the value to be placed in the variable
 	 */
 	void setVariable(String name, @Nullable Object value);
 

spring-expression/src/main/java/org/springframework/expression/spel/standard/SpelCompiler.java

@@ -190,8 +190,8 @@ public final class SpelCompiler implements Opcodes {
 	 * because they anchor compiled classes in memory and prevent GC.  If you have expressions
 	 * continually recompiling over time then by replacing the classloader periodically
 	 * at least some of the older variants can be garbage collected.
-	 * @param name name of the class
-	 * @param bytes bytecode for the class
+	 * @param name the name of the class
+	 * @param bytes the bytecode for the class
 	 * @return the Class object for the compiled expression
 	 */
 	@SuppressWarnings("unchecked")