spelling: backslash

Signed-off-by: Josh Soref <2119212+jsoref@users.noreply.github.com>

packages/mermaid/src/diagrams/flowchart/parser/flow-text.spec.js

@@ -429,7 +429,7 @@ describe('[Text] when parsing', () => {
 
       expect(vert.get('C').text).toBe('Начало');
     });
-    it('should handle backslask', function () {
+    it('should handle backslash', function () {
       const res = flow.parser.parse('graph TD;A-->C(c:\\windows);');
 
       const vert = flow.parser.yy.getVertices();