🚑 Fix shtab

Author: Freed-Wu

src/tmux_language_server/__main__.py

@@ -11,7 +11,7 @@
 try:
     import shtab
 except ImportError:
-    import _shtab as shtab
+    from . import _shtab as shtab
 
 NAME = NAME.replace("_", "-")
 VERSION = rf"""{NAME} {__version__}