Update Angular resolution.md

Author: eahussein

resources/links/Angular resolution.md

@@ -11,7 +11,7 @@
 
 **_SO THE GOAL BECOMES HOW TO MAKE IMAGES WITH SMALL ANGULAR RESOLUTIONS._**
 
-It seems that in astronomy, there is a relationship between the image resolution $\theta$ and the wavelength $\lambda$ giving by
+It seems that in astronomy, there is a relationship between the image resolution $\theta$ and the wavelength $\lambda$ giving by:
 
 
 $$\theta = 1.22 \frac{\lambda} {D}$$