Merge pull request goldfire#1404 from ubershmekel/patch-1

Missing backtick in README.md

Author: goldfire

README.md

@@ -426,7 +426,7 @@ Get/set the panner node's attributes for a sound or group of sounds.
   * **coneInnerAngle** `360` A parameter for directional audio sources, this is an angle, in degrees, inside of which there will be no volume reduction.
   * **coneOuterAngle** `360` A parameter for directional audio sources, this is an angle, in degrees, outside of which the volume will be reduced to a constant value of `coneOuterGain`.
   * **coneOuterGain** `0` A parameter for directional audio sources, this is the gain outside of the `coneOuterAngle`. It is a linear value in the range `[0, 1]`.
-  * **distanceModel** `inverse` Determines algorithm used to reduce volume as audio moves away from listener. Can be `linear`, `inverse` or `exponential. You can find the implementations of each in the [spec](https://webaudio.github.io/web-audio-api/#idl-def-DistanceModelType).
+  * **distanceModel** `inverse` Determines algorithm used to reduce volume as audio moves away from listener. Can be `linear`, `inverse` or `exponential`. You can find the implementations of each in the [spec](https://webaudio.github.io/web-audio-api/#idl-def-DistanceModelType).
   * **maxDistance** `10000` The maximum distance between source and listener, after which the volume will not be reduced any further.
   * **refDistance** `1` A reference distance for reducing volume as source moves further from the listener. This is simply a variable of the distance model and has a different effect depending on which model is used and the scale of your coordinates. Generally, volume will be equal to 1 at this distance.
   * **rolloffFactor** `1` How quickly the volume reduces as source moves from listener. This is simply a variable of the distance model and can be in the range of `[0, 1]` with `linear` and `[0, ∞]` with `inverse` and `exponential`.