Fix relatively sized line-height on paragraph styles

Paragraphs with larger font sizes will now have proportionally sized line-heights based on the font size.

src/views/annual-report/annual-report.scss

@@ -38,7 +38,7 @@ h5 {
 
 p {
     font-size: 1rem;
-    line-height: 2rem;
+    line-height: 2em;
 }
 
 @media #{$small} {