Revert some bad search/replace

Author: djsauble

docs/languages/go.md

@@ -93,7 +93,7 @@ sandbox = "pure"
 
 ### Nix expression builds
 
-To build a project using [`buildGoModule`](https://nixos.org/man/nixpkgs/stable/#sec-language-go) which will import your existing dependency file, but you will need to [update the hash][nix-expression-hashes]:
+To build a project using [`buildGoModule`](https://nixos.org/manual/nixpkgs/stable/#sec-language-go) which will import your existing dependency file, but you will need to [update the hash][nix-expression-hashes]:
 
 ```go
 { buildGoModule }:

docs/languages/nodejs.md

@@ -76,7 +76,7 @@ sandbox = "pure"
 
 ### Nix expression builds
 
-To build a project using [`buildNpmPackage`](https://nixos.org/man/nixpkgs/stable/#language-javascript) which will import your existing dependency file:
+To build a project using [`buildNpmPackage`](https://nixos.org/manual/nixpkgs/stable/#language-javascript) which will import your existing dependency file:
 
 ```nix
 {

docs/languages/rust.md

@@ -269,7 +269,7 @@ runtime-packages = ["libiconv", "gcc"]
 
 ### Nix expression builds
 
-To build a project using [`buildRustPackage`](https://nixos.org/man/nixpkgs/stable/#rust) which will import your existing dependency file:
+To build a project using [`buildRustPackage`](https://nixos.org/manual/nixpkgs/stable/#rust) which will import your existing dependency file:
 
 ```nix
 { rustPlatform }: