Add Husky pre-commit and pre-push hooks for automated doc checks

.husky/pre-commit

@@ -0,0 +1,3 @@
+. "$(dirname -- "$0")/_/husky.sh"
+
+pnpm lint-staged

.husky/pre-push

@@ -0,0 +1,4 @@
+. "$(dirname -- "$0")/_/husky.sh"
+
+pnpm fix-redirects
+pnpm link-checker

package.json

@@ -16,8 +16,19 @@
     "dev": "next dev",
     "build": "next build",
     "start": "next start",
-    "postbuild": "next-sitemap"
+    "postbuild": "next-sitemap",
+    "prepare": "husky"
   },
+"lint-staged": {
+  "**/*.mdx": [
+    "eslint --max-warnings 0",
+    "cspell lint"
+  ],
+  "**/*": [
+    "pnpm fix-redirects",
+    "pnpm link-checker"
+  ]
+ },
   "dependencies": {
     "@eth-optimism/contracts-ts": "^0.17.0",
     "@eth-optimism/tokenlist": "^9.0.9",
@@ -51,6 +62,8 @@
     "ethers": "^5",
     "globby": "^11.0.4",
     "gray-matter": "^4.0.3",
+    "husky": "^9.1.7",
+    "lint-staged": "^15.4.3",
     "remark": "^15.0.1",
     "remark-code-import": "^1.2.0",
     "remark-frontmatter": "^5.0.0",
@@ -76,4 +89,4 @@
       "nextra@2.13.2": "patches/nextra@2.13.2.patch"
     }
   }
-}
+}

pages/app-developers/tutorials/transactions/sdk-estimate-costs.mdx

@@ -188,7 +188,7 @@ Here you'll estimate the cost of a simple transaction that sends a small amount
 </Steps>
 
 <Callout type="info">
-Estimates will never be entirely accurate due to network conditions and gas price fluctuations, but they should be close to the actual costs.
+Estimates will never be entirely accurate due to network conditions and gas price fluctuation, but they should be close to the actual costs.
 </Callout>
 
 ## Next steps

pages/stack/design-principles.mdx

@@ -72,7 +72,7 @@ We hope that you can see the influence of this philosophy when looking at Optimi
 ## Design principles for USEful software
 
 The OP Stack is USEful software. The OP Stack is a set of software components for building L2 blockchain ecosystems, built by the Optimism Collective to power Optimism.
-Components to be added to the OP Stack should be built according to three key design principles: **U**tility, **S**implicity, **E**xtensibility.
+Components to be added to the OP Stack should be built according to three key design principles: **U**tility, Simplicity, **E**xtensibility.
 Software that follows these principles is **USE**ful software for the Optimism Collective!
 
 ### Utility