Update 2018-10-04-webglcontextlost.html

change webgl to WebGL

Author: michaelbabyn

_posts/plotly_js/chart-events/events/2018-10-04-webglcontextlost.html

@@ -6,7 +6,7 @@
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-  Plotly graphs which use webgl receive a "webgl context" from the browser which gives them access to gpu resources.
-  A program may lose its web context if the browser is overloaded with webgl contexts and is forced to shut one down.
-  The event handler: `plotly_webglcontextlost`, can be used to trigger an event after a graph using webgl loses it's webgl context.
+  Plotly graphs which use WebGL receive a "WebGL context" from the browser which gives them access to gpu resources.
+  A program may lose its WebGL context if the browser is overloaded with them and is forced to shut one down.
+  The event handler: `plotly_webglcontextlost`, can be used to trigger an event after a graph loses it's WebGL context.
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