Tiny typo fixup

Author: asottile

.github/ISSUE_TEMPLATE.md

@@ -1,4 +1,4 @@
-### Title: Be as meaningfull as possible in 60 chars if possible
+### Title: Be as meaningful as possible in 60 chars if possible
 
 input.scss
 ```scss
@@ -26,4 +26,4 @@ node-sass       3.3.3   (Wrapper)       [JavaScript]
 libsass         3.2.5   (Sass Compiler) [C/C++]
 ```
 
-[1]: http://libsass.ocbnet.ch/srcmap/#dGVzdCB7CiAgY29udGVudDogYmFyOyB9Cg==
+[1]: http://libsass.ocbnet.ch/srcmap/#dGVzdCB7CiAgY29udGVudDogYmFyOyB9Cg==