fix typos on homepage

Author: JoeChenJ

src/intl/en/page-index.json

@@ -111,7 +111,7 @@
   "page-index-values-censorship-legacy-label": "Censorable",
   "page-index-values-censorship-legacy-content-0": "Modern platforms and its rules often change. They can be influenced by stakeholders, company management or even oppressive regimes.",
   "page-index-values-censorship-ethereum-label": "Censorship resistant",
-  "page-index-values-censorship-ethereum-content-0": "Resistance to oppression is key principal of Ethereum. Its functionality should always stay fair and impartial.",
+  "page-index-values-censorship-ethereum-content-0": "Resistance to oppression is key principle of Ethereum. Its functionality should always stay fair and impartial.",
   "page-index-values-censorship-ethereum-content-1": "Ethereum cannot be controlled by any nation state, company or individual.",
   "page-index-values-open-legacy-label": "Closed to most",
   "page-index-values-open-legacy-content-0": "Companies protect their intellectual property and don’t share. No one outside the company can see how things work, fix problems, or make improvements. Its hard for people to create new tools or customize.",