corrected typos (#18)

Author: sumeet-chand

_includes/templates/footer.liquid

@@ -38,7 +38,7 @@
     </a>
     <br>
     <div class="generator">
-        Devloped by
+        Developed by
         <a href="https://ptprashanttripathi.github.io" rel="noreferrer" target="_blank" title="Pt. Prashant Tripathi">Pt. Prashant Tripathi</a>
     </div>
 </div>

functions.md

@@ -9,7 +9,7 @@ In vedic, a function is defined using सूत्र keyword.
 Information can be passed into सूत्र as मान.
 To let a सूत्र return a value, use the फल keyword
 
-for a example the following code defines a सूत्र named `योग` that takes 2 मान (varibals) `अ` and `ब` and returns addition of those.
+for a example the following code defines a सूत्र named `योग` that takes 2 मान (variables) `अ` and `ब` and returns addition of those.
 
 Then, `योग` is called and `वद`.
 

variables.md

@@ -57,7 +57,7 @@ and to float are also same
 मान पाई   = ३.१४१५९;
 ```
 
-## तर्क (t. _tarka_, m.  _logic_)	
+### तर्क (t. _tarka_, m.  _logic_)	
 
 This allows you to write raw `सत्य` ( _true_ ) or `असत्य` ( _false_ ) values: