remove guidance that authors need to consider locatability of URIs

Author: gregsdennis

jsonschema-core.md

@@ -1045,10 +1045,7 @@ IRI.
 
 Note that this IRI is an identifier and not necessarily a network locator. In
 the case of a network-addressable URL, a schema need not be downloadable from
-its canonical IRI. However, schema authors SHOULD refrain from creating schemas
-that use a locatable `$id` value unless the schema will be available at the
-indicated location. Otherwise, an IRI which does not convey location semantics
-SHOULD be used.
+its canonical IRI.
 
 If present, the value for this keyword MUST be a string, and MUST represent a
 valid [IRI-reference](#rfc3987). This IRI-reference SHOULD be normalized, and
@@ -2085,7 +2082,7 @@ consumers will need to properly interpret validation results.
 JSON Schema output is defined using the JSON Schema data instance model as
 described in section 4.2.1. Implementations MAY deviate from this as supported
 by their specific languages and platforms, however it is RECOMMENDED that the
-output be convertible to the JSON format defined herein via serialization or
+output be convertib le to the JSON format defined herein via serialization or
 other means.
 
 ### Output Formats