Fix $comment paragraphs

No idea when this happened.

Author: handrews

jsonschema-core.xml

@@ -2034,29 +2034,34 @@
                 <t>
                     This keyword reserves a location for comments from schema authors
                     to readers or maintainers of the schema.
-
+                </t>
+                <t>
                     The value of this keyword MUST be a string. Implementations MUST NOT present this
                     string to end users.  Tools for editing schemas SHOULD support displaying and
                     editing this keyword.  The value of this keyword MAY be used in debug or error
                     output which is intended for developers making use of schemas.
-
+                </t>
+                <t>
                     Schema vocabularies SHOULD allow "$comment" within any object containing
                     vocabulary keywords.  Implementations MAY assume "$comment" is allowed
                     unless the vocabulary specifically forbids it.  Vocabularies MUST NOT
                     specify any effect of "$comment" beyond what is described in this
                     specification.
-
+                </t>
+                <t>
                     Tools that translate other media types or programming languages
                     to and from application/schema+json MAY choose to convert that media type or
                     programming language's native comments to or from "$comment" values.
                     The behavior of such translation when both native comments and "$comment"
                     properties are present is implementation-dependent.
-
+                </t>
+                <t>
                     Implementations SHOULD treat "$comment" identically to an unknown extension
                     keyword.  They MAY strip "$comment" values at any point during processing.
                     In particular, this allows for shortening schemas when the size of deployed
                     schemas is a concern.
-
+                </t>
+                <t>
                     Implementations MUST NOT take any other action based on the presence, absence,
                     or contents of "$comment" properties.  In particular, the value of "$comment"
                     MUST NOT be collected as an annotation result.