Fix projectFile in a test.

Author: reznikmm

testsuite/ada_lsp/callgraph.named_blocks/test.json

@@ -136,7 +136,7 @@
             "params": {
                "settings": {
                   "ada": {
-                     "projectFile": "/home/leonardo/Development/ancr/src/gnatstudio/subprojects/ada_language_server/testsuite/ada_lsp/callgraph.named_blocks/default.gpr",
+                     "projectFile": "$URI{default.gpr}",
                      "scenarioVariables": {},
                      "defaultCharset": "ISO-8859-1",
                      "enableDiagnostics": false,