Typo: traling → trailing (#248)

Author: pete-murphy

README.md

@@ -23,7 +23,7 @@ make installDeps
 
 Install for Nix users:
 ```sh
-# Remove purescript and spago and removing traling , from package.json
+# Remove purescript and spago and removing trailing , from package.json
 sed --in-place '/purescript\|spago/d' ./package.json && sed --in-place '$!N;s/,\n  }/\n  }/;P;D' package.json
 nix-shell
 ```

scripts/ReadmeContent.md

@@ -23,7 +23,7 @@ make installDeps
 
 Install for Nix users:
 ```sh
-# Remove purescript and spago and removing traling , from package.json
+# Remove purescript and spago and removing trailing , from package.json
 sed --in-place '/purescript\|spago/d' ./package.json && sed --in-place '$!N;s/,\n  }/\n  }/;P;D' package.json
 nix-shell
 ```