fix typo of visibility_of

Author: edwin0cheng

crates/ra_hir/src/code_model.rs

@@ -235,7 +235,7 @@ impl Module {
     }
 
     pub fn visibility_of(self, db: &dyn HirDatabase, def: &ModuleDef) -> Option<Visibility> {
-        db.crate_def_map(self.id.krate)[self.id.local_id].scope.visbility_of(def.clone().into())
+        db.crate_def_map(self.id.krate)[self.id.local_id].scope.visibility_of(def.clone().into())
     }
 
     pub fn diagnostics(self, db: &dyn HirDatabase, sink: &mut DiagnosticSink) {

crates/ra_hir_def/src/item_scope.rs

@@ -68,7 +68,7 @@ impl ItemScope {
         self.impls.iter().copied()
     }
 
-    pub fn visbility_of(&self, def: ModuleDefId) -> Option<Visibility> {
+    pub fn visibility_of(&self, def: ModuleDefId) -> Option<Visibility> {
         self.name_of(ItemInNs::Types(def))
             .or_else(|| self.name_of(ItemInNs::Values(def)))
             .map(|(_, v)| v)