fix: Fix Harper installer for Mac and Unix (2)

See #1494

Signed-off-by: azerr <azerr@redhat.com>

Author: angelozerr

src/main/resources/templates/lsp/harper-ls/installer.json

@@ -33,8 +33,8 @@
         "file": {
           "name": {
             "windows": "harper-ls.exe",
-            "unix": "harmer-ls",
-            "mac": "harmer-ls"
+            "unix": "harper-ls",
+            "mac": "harper-ls"
           },
           "executable": true
         }