fix typos

Author: domel

spec/index.html

@@ -196,7 +196,7 @@ <h2>TriG Language</h2>
   The <a data-cite="RDF12-CONCEPTS#dfn-iri">IRI</a> or
   <a data-cite="RDF12-CONCEPTS#dfn-blank-node">blank node</a>
   of the graph statement may be used in another graph statement
-  which implies taking the union of the tripes generated
+  which implies taking the union of the triples generated
   by each graph statement.
   An <a data-cite="RDF12-CONCEPTS#dfn-iri">IRI</a> or
   <a data-cite="RDF12-CONCEPTS#dfn-blank-node">blank node</a>
@@ -232,14 +232,14 @@ <h3>Triple Statements</h3>
     <h3>Graph Statements</h3>
 
     <p>A graph statement pairs an
-      <a data-cite="RDF12-CONCEPTS#dfn-iri">IRIs</a> or
+      <a data-cite="RDF12-CONCEPTS#dfn-iri">IRI</a> or
       <a data-cite="RDF12-CONCEPTS#dfn-blank-node">blank node</a> with an
       <a data-cite="RDF12-CONCEPTS#dfn-rdf-graph">RDF graph</a>.
       The triple statements that make up the graph are enclosed in
       <a href="#cp-left-curly-bracket"><code title="left curly bracket">{</code></a><a href="#cp-right-curly-bracket"><code title="right curly bracket">}</code></a>.</p>
 
     <p>In a <a>TriG document</a> a graph IRI or <a data-cite="RDF12-CONCEPTS#dfn-blank-node">blank node</a> may be used as label
-      for more than one graph statements.
+      for more than one graph statement.
       The graph label of a graph statement may be omitted.
       In this case the graph is considered the <a data-cite="RDF12-CONCEPTS#dfn-default-graph">default graph</a> of the <a data-cite="RDF12-CONCEPTS#dfn-rdf-dataset">RDF dataset</a>.</p>