meson: adjust nlohmann-json dependency

Simplify the nlohmann-json dependency in meson and use the wrap file
location aligned with other repos.

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I3c157966fafb5d9090c3c67d916b06932d3ef3df
diff --git a/meson.build b/meson.build
index 5a7efd4..5bbdfc2 100644
--- a/meson.build
+++ b/meson.build
@@ -8,15 +8,6 @@
     meson_version: '>=1.1.1',
 )
 
-cpp = meson.get_compiler('cpp')
-
-if cpp.has_header('nlohmann/json.hpp')
-    nlohmann_json = declare_dependency()
-else
-    subproject('nlohmann-json')
-    nlohmann_json = dependency('nlohmann_json')
-endif
-
 executable(
     'health-monitor',
     [
@@ -27,7 +18,7 @@
         dependency('phosphor-logging'),
         dependency('sdbusplus'),
         dependency('sdeventplus'),
-        nlohmann_json,
+        dependency('nlohmann_json', include_type: 'system')
     ],
     install: true,
     install_dir: get_option('bindir')
diff --git a/subprojects/nlohmann-json.wrap b/subprojects/nlohmann_json.wrap
similarity index 62%
rename from subprojects/nlohmann-json.wrap
rename to subprojects/nlohmann_json.wrap
index 477e844..3745380 100644
--- a/subprojects/nlohmann-json.wrap
+++ b/subprojects/nlohmann_json.wrap
@@ -1,6 +1,6 @@
 [wrap-git]
-url = https://github.com/nlohmann/json
 revision = HEAD
+url = https://github.com/nlohmann/json.git
 
 [provide]
 nlohmann_json = nlohmann_json_dep