small HTML issue

[Jonathan Gibbons]

The "<p>" in the following text, at about line 156 in 
SourceCodeAnalysis.java is redundant,
and shows up in reports by "tidy" on the generated docs.


      * Only preliminary compilation is performed, sufficient to build the
      * {@code Snippet}.  Snippets known to be erroneous, are returned as
      * {@link ErroneousSnippet}, other snippets may or may not be in error.
      * <p>
      * @param input The input String to convert
      * @return usually a singleton list of Snippet, but may be empty or 
multiple
      * @throws IllegalStateException if the {@code JShell} instance is 
closed.

The <p> should be deleted.

As a general rule, only use <p> at the beginning of a paragraph, when it 
is immediately
followed by text to appear in that paragraph.

Don't use <p> at the end of a paragraph or before block tags.

-- Jon