Update StandardizationGuidelines.md

Author: nataled

docs/StandardizationGuidelines.md

@@ -11,6 +11,8 @@ title: Ontology Standardization Guidelines
 - Ontology metadata requirements [#1365](https://github.com/OBOFoundry/OBOFoundry.github.io/issues/1365)
 - Ontology root terms annotation [#2149](https://github.com/OBOFoundry/OBOFoundry.github.io/issues/2149)
 - Language tags [#479](https://github.com/OBOFoundry/OBOFoundry.github.io/issues/479)
+- Use standard synonym types [#2450](https://github.com/OBOFoundry/OBOFoundry.github.io/issues/2450)
+- Modeling metaclasses [#2454](https://github.com/OBOFoundry/OBOFoundry.github.io/issues/2454)
 
 ### Content
 
@@ -19,7 +21,6 @@ title: Ontology Standardization Guidelines
 - Term adoption [#2330](https://github.com/OBOFoundry/OBOFoundry.github.io/issues/2330) and [#2324](https://github.com/OBOFoundry/OBOFoundry.github.io/issues/2324)
 - Standardized xref prefixes in ontologies [#525](https://github.com/OBOFoundry/OBOFoundry.github.io/issues/525)
 - Referring to taxa not in NCBITaxon [#434](https://github.com/OBOFoundry/OBOFoundry.github.io/issues/434)
-- Use standard synonym types [#2450](https://github.com/OBOFoundry/OBOFoundry.github.io/issues/2450)
 
 ### Releases
 
@@ -37,8 +38,3 @@ title: Ontology Standardization Guidelines
 - Documentation for license [#1840](https://github.com/OBOFoundry/OBOFoundry.github.io/issues/1840)
 - Exemplar classes [#899](https://github.com/OBOFoundry/OBOFoundry.github.io/issues/899)
 - Linking term to discussion on tracker [#1097](https://github.com/OBOFoundry/OBOFoundry.github.io/issues/1097)
-
-
-Not yet classified:
-
-- METADATA Modeling metaclasses [#2454](https://github.com/OBOFoundry/OBOFoundry.github.io/issues/2454)