Fix naming

Author: IvanZosimov

src/setup-python.ts

@@ -39,15 +39,15 @@ function resolveVersionInput(): string {
   if (versionFile) {
     const defaultVersionFile = '.python-version';
 
-    const VersionFileExists = fs.existsSync(versionFile);
+    const versionFileExists = fs.existsSync(versionFile);
     const defaultVersionFileExists = fs.existsSync(defaultVersionFile);
 
-    if (!VersionFileExists && !defaultVersionFileExists) {
+    if (!versionFileExists && !defaultVersionFileExists) {
       throw new Error(
         `The specified python version file at: ${versionFile} does not exist and default ${defaultVersionFile} file isn't found`
       );
     }
-    if (VersionFileExists) {
+    if (versionFileExists) {
       version = fs.readFileSync(versionFile, 'utf8');
       core.info(`Resolved ${versionFile} as ${version}`);
     } else {