remove an extra slash added at toggling file visibility

app/build.gradle

@@ -46,7 +46,7 @@ ext {
 }
 
 dependencies {
-    implementation 'com.simplemobiletools:commons:3.15.18'
+    implementation 'com.simplemobiletools:commons:3.16.0'
     implementation 'com.theartofdev.edmodo:android-image-cropper:2.6.0'
     implementation 'com.android.support:multidex:1.0.3'
     implementation 'com.google.code.gson:gson:2.8.2'

app/src/main/kotlin/com/simplemobiletools/gallery/extensions/Activity.kt

@@ -150,7 +150,7 @@ fun BaseSimpleActivity.toggleFileVisibility(oldPath: String, hide: Boolean, call
         filename.substring(1, filename.length)
     }
 
-    val newPath = "$path/$filename"
+    val newPath = "$path$filename"
     renameFile(oldPath, newPath) {
         callback?.invoke(newPath)
     }