fix typo on text geometry primitive

threejs/lessons/threejs-primitives.md

@@ -31,7 +31,7 @@ parameters so you can use more or less depending on your needs.
 <div id="Diagram-DodecahedronGeometry" data-primitive="DodecahedronGeometry">A dodecahedron (12 sides)</div>
 <div id="Diagram-ExtrudeGeometry" data-primitive="ExtrudeGeometry">An extruded 2d shape with optional bevelling.
 Here we are extruding a heart shape. Note this is the basis
-for <code>TextGeometry</code> and <code>TextGeometry</code> respectively.</div>
+for <code>TextGeometry</code>.</div>
 <div id="Diagram-IcosahedronGeometry" data-primitive="IcosahedronGeometry">An icosahedron (20 sides)</div>
 <div id="Diagram-LatheGeometry" data-primitive="LatheGeometry">A shape generated by spinning a line. Examples would be: lamps, bowling pins, candles, candle holders, wine glasses, drinking glasses, etc... You provide the 2d silhouette as series of points and then tell three.js how many subdivisions to make as it spins the silhouette around an axis.</div>
 <div id="Diagram-OctahedronGeometry" data-primitive="OctahedronGeometry">An Octahedron (8 sides)</div>