"Yarn may [+not] solve all your problems" and "will always be to[+at]" (#5727)

Fixed typos on the front page of the website.

"Yarn may solve all your problems - but it'll give you the tools to
solve the ones you find on your way." -> "Yarn may not solve all your
problems - but it'll give you the tools to solve the ones you find on
your way."

"Yarn will always be to the frontline" -> "Yarn will always be at the
frontline"

Co-authored-by: nbrader <[email protected]>

Author: nbrader

packages/docusaurus/src/components/HomepageFeatures/index.tsx

@@ -45,7 +45,7 @@ const FeatureList: Array<FeatureItem> = [
     icon: `icon-plugins`,
     description: (
       <>
-        Yarn may solve all your problems - but it'll give you the tools to
+        Yarn may not solve all your problems - but it'll give you the tools to
         solve the ones you find on your way.
       </>
     ),
@@ -55,7 +55,7 @@ const FeatureList: Array<FeatureItem> = [
     icon: `icon-innovation`,
     description: (
       <>
-        We believe in challenging the status quo. Yarn will always be to the
+        We believe in challenging the status quo. Yarn will always be at the
         frontline, brewing new workflows and improving old ones.
       </>
     ),