Add missing '$' character to docblock for taxonomy_get_term_by_name() function.

Attached one-line patch fixes what I am sure is a simple typographical error:

--- a/modules/taxonomy/taxonomy.module
+++ b/modules/taxonomy/taxonomy.module
@@ -1061,7 +1061,7 @@ function taxonomy_get_tree($vid, $parent = 0, $max_depth = NULL
  * Provides a case-insensitive and trimmed mapping, to maximize the
  * likelihood of a successful match.
  *
- * @param name
+ * @param $name
  *   Name of the term to search for.
  *
  * @return

Also fixes some trailing whitespace errors courtesty of drupal_mode.el.