Revert key to pylsp for consistency in settings and ease of transition

Author: krassowski

python_packages/jupyter_lsp/jupyter_lsp/specs/python_lsp_server.py

@@ -3,11 +3,10 @@
 
 
 class PythonLSPServer(PythonModuleSpec):
-    python_module = "pylsp"
-    key = "python-lsp-server"
+    python_module = key = "pylsp"
     languages = ["python"]
     spec = dict(
-        display_name="python-lsp-server",
+        display_name="python-lsp-server (pylsp)",
         mime_types=["text/python", "text/x-ipython"],
         urls=dict(
             home="https://github.com/python-lsp/python-lsp-server",

python_packages/jupyter_lsp/jupyter_lsp/tests/conftest.py

@@ -19,7 +19,7 @@
     "bash-language-server",
     "dockerfile-language-server-nodejs",
     "javascript-typescript-langserver",
-    "python-lsp-server",
+    "pylsp",
     "unified-language-server",
     "sql-language-server",
     "vscode-css-languageserver-bin",