Merge pull request #5 from virtual-labs/dev

Update theory.md

Author: jnipun1994

experiment/theory.md

@@ -135,7 +135,7 @@
 
      <center>
 
-    ![Power Meter](images/power_meter.jpg)
+    ![Power Meter](images/power_meter.jpg)    
 
     **Fig. 12 Power Meter**</center> 
 
@@ -147,4 +147,4 @@
     ![VSMR Meter](images/VSMR_meter.png)
 
     **Fig. 13 VSMR Meter**</center> 
-</div>
+</div>