fix(index.ts): fix error return message

Author: AndreVarandas

src/__tests__/FetchReadme.test.ts

@@ -58,7 +58,7 @@ describe('Fetch Readme', () => {
     try {
       await fetchReadme(nonExistentReadmeConfiguration)
     } catch (error) {
-      expect(error).toMatch('404 - Unable to find a readme.md.s')
+      expect(error).toMatch('404 - Unable to find a readme.md.')
     }
   })
 

src/index.ts

@@ -77,7 +77,7 @@ const fetchReadme = async (config: IFetchReadmeConfig) => {
     validateConfigurationObject(config)
     return await getGithubReadmeForRepository(config)
   } catch (error) {
-    return new Error(error)
+    throw error.message
   }
 }