Fixed paths in generateCssHelpers script

Required after the `eslint` bump in e853a0a

Author: alex-ju

packages/tokens/scripts/build-parts/generateCssHelpers.ts

@@ -16,7 +16,7 @@ export const PREFIX = 'hds';
 
 export async function generateCssHelpers(dictionary: Dictionary, config: Platform ): Promise<void> {
 
-    fs.ensureDir(`${config.buildPath}/helpers/`);
+    fs.ensureDir(`${config.buildPath}helpers/`);
 
     // tried to use style-dictionary/lib/common/formatHelpers/fileHeader.js but didn't work
     const header = `/**\n * Do not edit directly\n * Generated on ${new Date().toUTCString()}\n */\n`;
@@ -31,24 +31,24 @@ export async function generateCssHelpers(dictionary: Dictionary, config: Platfor
         // so it's simpler to process all the tokens (flat structure) and filter them
         const helpers = generateColorHelpers(dictionary.allTokens, outputCssVars);
         const content = `${header}\n${helpers.join('\n')}\n`;
-        await fs.writeFile(`${config.buildPath}/helpers/color.css`, content);
+        await fs.writeFile(`${config.buildPath}helpers/color.css`, content);
     }
 
     if (dictionary.tokens.typography) {
         const helpers = generateTypographyHelpers(dictionary.tokens.typography, outputCssVars);
         const content = `${header}\n${helpers.join('\n')}\n`;
-        await fs.writeFile(`${config.buildPath}/helpers/typography.css`, content);
+        await fs.writeFile(`${config.buildPath}helpers/typography.css`, content);
     }
 
     if (dictionary.tokens.elevation) {
         const helpers = generateElevationHelpers(dictionary.tokens.elevation, dictionary.tokens.surface, outputCssVars);
         const content = `${header}\n${helpers.join('\n')}\n`;
-        await fs.writeFile(`${config.buildPath}/helpers/elevation.css`, content);
+        await fs.writeFile(`${config.buildPath}helpers/elevation.css`, content);
     }
 
     if (dictionary.tokens['focus-ring']) {
         const helpers = generateFocusRingHelpers(dictionary.tokens['focus-ring'], outputCssVars);
         const content = `${header}\n${helpers.join('\n')}\n`;
-        await fs.writeFile(`${config.buildPath}/helpers/focus-ring.css`, content);
+        await fs.writeFile(`${config.buildPath}helpers/focus-ring.css`, content);
     }
 }