be consistent in our capitalization

Author: nikomatsakis

posts/inside-rust/blog.yml

@@ -1,5 +1,5 @@
 title: Inside Rust blog
-index-title: the Inside Rust blog
+index-title: The "Inside Rust" Blog
 description: Want to follow along with Rust development? Curious how you might get involved? Take a look!
 index-html: This is the <b>"Inside Rust"</b> blog. This blog is aimed at those who wish
             to follow along with Rust development. The various