Update camera.md

Fix IFD0 typo.

Author: XECDesign

raspbian/applications/camera.md

@@ -535,7 +535,7 @@ Save the image as a png file (lossless compression, but slower than JPEG). Note
 
 Add some EXIF information to the JPEG. This sets the Artist tag name to Boris, and the GPS altitude to 123.5m. Note that if setting GPS tags you should set as a minimum GPSLatitude, GPSLatitudeRef, GPSLongitude, GPSLongitudeRef, GPSAltitude and GPSAltitudeRef.
 ```
-	raspistill -t 2000 -o image.jpg -x IFDO.Artist=Boris -x GPS.GPSAltitude=1235/10
+	raspistill -t 2000 -o image.jpg -x IFD0.Artist=Boris -x GPS.GPSAltitude=1235/10
 ```
 
 Set an emboss style image effect