press enter after triple quotes (''') doesn't work

[seungbaeji]

Describe the bug
Press enter after triple quotes (''') doesn't work.
but cmd+shift+2 works well.

my current setting is below:

"setting": {
...
	"autoDocstring.docstringFormat": "google",
	"autoDocstring.quoteStyle": "'''"
}

Versions (please complete the following information):

• autoDocstring Version: 0.5.1
• Operating System: macOS catalina
• Vscode Version: 1.45.0

Original Code (with line to generate on):

# generate on this line

Expected Result:

Actual Result:

Additional context
Add any other context about the problem here.

[NilsJPWerner]

Dupicate of #125