docs(json): mention dashes replaced with underscores

Author: weihanglo

src/doc/man/cargo-metadata.md

@@ -151,7 +151,9 @@ The JSON output has the following format:
                     "crate_types": [
                         "bin"
                     ],
-                    /* The name of the target. */
+                    /* The name of the target.
+                       For lib targets, dashes will be replaced with underscores.
+                    */
                     "name": "my-package",
                     /* Absolute path to the root source file of the target. */
                     "src_path": "/path/to/my-package/src/main.rs",

src/doc/man/generated_txt/cargo-metadata.txt

@@ -147,7 +147,9 @@ OUTPUT FORMAT
                                "crate_types": [
                                    "bin"
                                ],
-                               /* The name of the target. */
+                               /* The name of the target.
+                                  For lib targets, dashes will be replaced with underscores.
+                               */
                                "name": "my-package",
                                /* Absolute path to the root source file of the target. */
                                "src_path": "/path/to/my-package/src/main.rs",

src/doc/src/commands/cargo-metadata.md

@@ -151,7 +151,9 @@ The JSON output has the following format:
                     "crate_types": [
                         "bin"
                     ],
-                    /* The name of the target. */
+                    /* The name of the target.
+                       For lib targets, dashes will be replaced with underscores.
+                    */
                     "name": "my-package",
                     /* Absolute path to the root source file of the target. */
                     "src_path": "/path/to/my-package/src/main.rs",

src/doc/src/reference/external-tools.md

@@ -97,8 +97,10 @@ structure:
         "crate_types": [
             "lib"
         ],
-        /* The name of the target. */
-        "name": "my-package",
+        /* The name of the target.
+           For lib targets, dashes will be replaced with underscores.
+        */
+        "name": "my_package",
         /* Absolute path to the root source file of the target. */
         "src_path": "/path/to/my-package/src/lib.rs",
         /* The Rust edition of the target.
@@ -152,7 +154,7 @@ following structure:
         "crate_types": [
             "lib"
         ],
-        "name": "my-package",
+        "name": "my_package",
         "src_path": "/path/to/my-package/src/lib.rs",
         "edition": "2018",
         "doc": true,

src/doc/src/reference/unstable.md

@@ -645,7 +645,7 @@ The following is a description of the JSON structure:
       "target": {
         "kind": ["lib"],
         "crate_types": ["lib"],
-        "name": "my-package",
+        "name": "my_package",
         "src_path": "/path/to/my-package/src/lib.rs",
         "edition": "2018",
         "test": true,

src/etc/man/cargo-metadata.1

@@ -153,7 +153,9 @@ The JSON output has the following format:
                     "crate_types": [
                         "bin"
                     ],
-                    /* The name of the target. */
+                    /* The name of the target.
+                       For lib targets, dashes will be replaced with underscores.
+                    */
                     "name": "my\-package",
                     /* Absolute path to the root source file of the target. */
                     "src_path": "/path/to/my\-package/src/main.rs",