Replaced commas with decimal places for GeoCoordinates

Existing documentation incorrectly showed commas in the numbers, which is not accepted by the cmdlet.

Author: loryanstrant

exchange/exchange-ps/exchange/Set-Place.md

@@ -249,8 +249,8 @@ Accept wildcard characters: False
 ### -GeoCoordinates
 The GeoCoordinates parameter specifies the room's location in latitude, longitude and (optionally) altitude coordinates. A valid value for this parameter uses one of the following formats:
 
-- Latitude and longitude: For example, "47,644125;-122,122411"
-- Latitude, longitude, and altitude: For example, "47,644125;-122,122411;161,432"
+- Latitude and longitude: For example, "47.644125;-122.122411"
+- Latitude, longitude, and altitude: For example, "47.644125;-122.122411;161.432"
 
 ```yaml
 Type: GeoCoordinates