8312491: Update Classfile API snippets and examples

src/java.base/share/classes/jdk/internal/classfile/instruction/BranchInstruction.java

@@ -51,7 +51,7 @@ public sealed interface BranchInstruction extends Instruction
      *
      * @param op the opcode for the specific type of branch instruction,
      *           which must be of kind {@link Opcode.Kind#BRANCH}
-     * @param target
+     * @param target the target of the branch
      */
     static BranchInstruction of(Opcode op, Label target) {
         Util.checkKind(op, Opcode.Kind.BRANCH);

src/java.base/share/classes/jdk/internal/classfile/instruction/LabelTarget.java

@@ -41,8 +41,7 @@ public sealed interface LabelTarget extends PseudoInstruction
         permits LabelImpl {
 
     /**
-     *
-     * {@return label corresponding to this target}
+     * {@return the label corresponding to this target}
      */
     Label label();
 }