Fix javadoc errors

Author: ctrueden

src/main/java/org/scijava/module/process/AbstractSingleInputPreprocessor.java

@@ -38,8 +38,7 @@
 
 /**
  * Abstract superclass for {@link PreprocessorPlugin} implementations that
- * populate singleton inputs (e.g. it is common to have modules that operate on
- * a single {@link Dataset}). Contains helper methods to facilitate this
+ * populate singleton inputs. Contains helper methods to facilitate this
  * functionality.
  *
  * @author Mark Hiner

src/main/java/org/scijava/script/History.java

@@ -75,7 +75,7 @@ public void read() {
 	/**
 	 * Persist the history.
 	 * 
-	 * @see {@link Prefs}
+	 * @see PrefService
 	 */
 	public void write() {
 		prefs.putIterable(getClass(), entries, PREFIX + name);

src/main/java/org/scijava/util/ClassUtils.java

@@ -411,7 +411,7 @@ public static <A extends Annotation> void getAnnotatedFields(
 
 	/**
 	 * This method scans the provided class, its superclasses and interfaces for
-	 * all supported {@code {@link Annotation} : {@link AnnotatedObject} pairs.
+	 * all supported {@link Annotation} : {@link AnnotatedObject} pairs.
 	 * These are then cached to remove the need for future queries.
 	 * <p>
 	 * By combining multiple {@code Annotation : AnnotatedObject} pairs in one