fix typos and links

docs/eml-semantic-annotations-primer.md

@@ -33,7 +33,7 @@ from a structured system where "carbon dioxide flux" is lower in the hierarchy t
 
 EML 2.2.0 now provides ways to embed references to *[external vocabularies](#glossary-external-vocabulary)*
 using [HTTP uniform resource identifiers (or URI's)](#glossary-uri).
-The process is called *[semantic annotation](#glossary-semantic annotation)*, and provides a  
+The process is called *semantic annotation*, and provides a  
 rigorous, expressive and consistent interpretation of the metadata. Usually the external 
 reference (or annotation) is to a *[knowledge graph](#glossary-knowledge-graph)*, sometimes called 
 a *controlled vocabulary* or *[ontology](#glossary-ontology)*.    
@@ -497,7 +497,7 @@ Things to check:
 
 <a name="glossary"></a>
 
-### Glossary -  link terms in the text above to here.
+### Glossary
 
 <a name="glossary-ontology"></a> 
 **ontology**: A knowledge *graph* representation of a set of terms, including their names, and descriptions of 
@@ -523,41 +523,42 @@ the categories, properties, and relationships among those terms.
 <a name="glossary-subclass"></a>
 **subclasss**  definition here
 
+
 <a name="glossary-semantic-statement"></a>
 **semantic statement**  definition here
 
 
 <a name="external-vocabularies"></a>
 
-### Vocalularies used in Examples
+### Vocabularies used in Examples
 
 Communities using EML annotation will develop recommendations for suitable vocabularies, based
 on their own requirements (e.g., domain coverage, structure, adaptability, reliabliity and maintenance model). The following
 ontologies are already widely used, and were employed in the examples above:
 
 <a name="envo"></a>
 
-- **Enviromment Ontology (EnvO)**  definition, etc here
+- **Environment Ontology (EnvO)**  definition, etc here
 
 <a name="iao"></a>
 
-- **Inforamtion Artifact Ontology (IAO)**  definition, etc here
+- **Information Artifact Ontology (IAO)**  definition, etc here
 
 <a name="ecso"></a>
 
 - **Ecosystem Ontology (EcsO)**  definition, etc here
 
 <a name="ncbi_taxon"></a>
 
-- **NCBITaxon Ontlogy** http://www.ontobee.org/ontology/NCBITaxon definition, etc here
+- **NCBITaxon Ontology** http://www.ontobee.org/ontology/NCBITaxon definition, etc here
 
 <a name="oboe"></a>
 
 - **Extensible Ontology for Observations (OBOE)** (https://github.com/NCEAS/oboe) definition, etc here
 
 <a name="ecso"></a>
 
-- **ECoSystem Ontology, ECSO** (https://github.com/DataONEorg/sem-prov-ontologies/tree/master/observation). definition, etc here
+- **Ecosystem Ontology, ECSO** (https://github.com/DataONEorg/sem-prov-ontologies/tree/master/observation). definition, etc here
 
 <a name="schema.org"></a>