chore: fix typoed var name (angular#981)

Author: filipesilva

lib/broccoli/broccoli-typescript.js

@@ -81,8 +81,8 @@ class BroccoliTypeScriptCompiler extends Plugin {
           try {
             fs.symlinkSync(absoluteFilePath, outputFilePath);
           } catch (e) {
-            const conentStr = fs.readFileSync(absoluteFilePath);
-            fs.writeFileSync(outputFilePath, conentStr);
+            const contentStr = fs.readFileSync(absoluteFilePath);
+            fs.writeFileSync(outputFilePath, contentStr);
           }
         });
       } else {
@@ -211,8 +211,8 @@ class BroccoliTypeScriptCompiler extends Plugin {
     try {
       fs.symlinkSync(absoluteFilePath, outputFilePath);
     } catch (e) {
-      const conentStr = fs.readFileSync(absoluteFilePath);
-      fs.writeFileSync(outputFilePath, conentStr);
+      const contentStr = fs.readFileSync(absoluteFilePath);
+      fs.writeFileSync(outputFilePath, contentStr);
     }
   }