Fix typos in Javadoc and comments

Author: garydgregory

src/main/java/org/apache/commons/io/Charsets.java

@@ -188,7 +188,7 @@ public static Charset toCharset(final Charset charset) {
      *
      * @param charset The charset to test, may be null.
      * @param defaultCharset The charset to return if charset is null, may be null.
-     * @return a Charset .
+     * @return a Charset.
      * @since 2.12.0
      */
     public static Charset toCharset(final Charset charset, final Charset defaultCharset) {

src/main/java/org/apache/commons/io/build/AbstractOriginSupplier.java

@@ -176,7 +176,7 @@ protected static URIOrigin newURIOrigin(final URI origin) {
      * Constructs a new writer origin for a file.
      *
      * @param origin the writer.
-     * @return a new writer .
+     * @return a new writer.
      */
     protected static WriterOrigin newWriterOrigin(final Writer origin) {
         return new WriterOrigin(origin);

src/main/java/org/apache/commons/io/input/TailerListenerAdapter.java

@@ -64,7 +64,8 @@ public void fileRotated() {
     }
 
     /**
-     * Handles an Exception .
+     * Handles an Exception.
+     *
      * @param ex the exception.
      */
     @Override
@@ -74,6 +75,7 @@ public void handle(final Exception ex) {
 
     /**
      * Handles a line from a Tailer.
+     *
      * @param line the line.
      */
     @Override
@@ -84,6 +86,7 @@ public void handle(final String line) {
     /**
      * The tailer will call this method during construction,
      * giving the listener a method of stopping the tailer.
+     *
      * @param tailer the tailer.
      */
     @Override