doc/manual: reword 'nixpkgs reference manual' to just 'nixpkgs' manual (#537491)

doc/build-helpers/dev-shell-tools.chapter.md

@@ -2,7 +2,7 @@
 
 The `nix-shell` command has popularized the concept of transient shell environments for development or testing purposes.
 <!--
-  We should try to document the product, not its development process in the Nixpkgs reference manual,
+  We should try to document the product, not its development process in the Nixpkgs manual,
   but *something* needs to be said to provide context for this library.
   This is the most future proof sentence I could come up with while Nix itself does not yet make use of this.
   Relevant is the current status of the devShell attribute "project": https://github.com/NixOS/nix/issues/7501

doc/manual.md.in

@@ -1,4 +1,4 @@
-# Nixpkgs Reference Manual {#nixpkgs-manual}
+# Nixpkgs Manual {#nixpkgs-manual}
 ## Version @MANUAL_VERSION@
 
 ```{=include=} chapters

nixos/tests/playwright-python.nix

@@ -29,7 +29,7 @@
               "firefox": {},
               "webkit": {}
             }
-            needle = re.compile("Nix.*Reference Manual")
+            needle = re.compile("Nix.* Manual")
             if len(sys.argv) != 3 or sys.argv[1] not in browsers.keys():
                 print(f"usage: {sys.argv[0]} [{'|'.join(browsers.keys())}] <url>")
                 sys.exit(1)

pkgs/by-name/uv/uv/package.nix

@@ -72,7 +72,7 @@ rustPlatform.buildRustPackage (finalAttrs: {
       Due to `uv`'s (over)eager fetching of dynamically-linked Python executables,
       as well as vendoring of dynamically-linked libraries within Python modules distributed via PyPI,
       NixOS users can run into issues when managing Python projects.
-      See the Nixpkgs Reference Manual entry for `uv` for information on how to mitigate these issues:
+      See the Nixpkgs Manual entry for `uv` for information on how to mitigate these issues:
       https://nixos.org/manual/nixpkgs/unstable/#sec-uv.
 
       For building Python projects with `uv` and Nix outside of nixpkgs, check out `uv2nix` at https://github.com/pyproject-nix/uv2nix.