Link to publish docs (#1120)

* Link to docs

* Fix fixtures

Author: JordanMartinez

src/Spago/Command/Publish.purs

@@ -157,7 +157,10 @@ publish _args = do
   buildPlan <- Fetch.getTransitiveDepsFromRegistry depsRanges Map.empty
 
   case selected.package.publish of
-    Nothing -> addError $ toDoc "Did not find publishing config: add a valid one in package.publish" -- TODO link to docs
+    Nothing -> addError $ toDoc
+      [ "Did not find publishing config: add a valid one in `package.publish`."
+      , "See the configuration file's documentation: https://github.com/purescript/spago#the-configuration-file"
+      ]
     Just publishConfig -> case publishConfig.location of
       Nothing -> addError $ toDoc "Need to specify a publish.location field."
       Just location -> do

test-fixtures/publish-main.txt

@@ -19,4 +19,4 @@ Your package "aaa" is not ready for publishing yet, encountered 1 error:
 in its `src` directory. All package sources must be in the `src` directory,
 with any additional sources indicated by the `files` key in your manifest.
 
-  - src/Main.purs: Module name is Main but PureScript libraries cannot publish modules named: Main, Test.Main
+  - src/Main.purs: Module name is Main but PureScript libraries cannot publish modules named: Main, Test.Main

test-fixtures/publish-no-bounds.txt

@@ -14,10 +14,11 @@ Errors       0     0     0
 Your package "aaaa" is not ready for publishing yet, encountered 2 errors:
 
 
-❌ Did not find publishing config: add a valid one in package.publish
+❌ Did not find publishing config: add a valid one in `package.publish`.
+See the configuration file's documentation: https://github.com/purescript/spago#the-configuration-file
 
 
 ❌ The configuration is missing version bounds for some packages. Run `spago fetch --ensure-ranges` to add them:
   - console
   - effect
-  - prelude
+  - prelude

test-fixtures/publish-no-config.txt

@@ -14,4 +14,5 @@ Errors       0     0     0
 Your package "aaaa" is not ready for publishing yet, encountered 1 error:
 
 
-❌ Did not find publishing config: add a valid one in package.publish
+❌ Did not find publishing config: add a valid one in `package.publish`.
+See the configuration file's documentation: https://github.com/purescript/spago#the-configuration-file

test-fixtures/publish-no-git.txt

@@ -17,4 +17,4 @@ Your package "aaa" is not ready for publishing yet, encountered 1 error:
 ❌ The git tree is not clean, or you haven't checked out the tag you want to publish.
 Please commit or stash your changes, and checkout the tag you want to publish.
 To create the tag, you can run:
-  git tag v0.0.1
+  git tag v0.0.1

test-fixtures/publish.txt

@@ -24,4 +24,4 @@ Errors       0     0     0
 ✅ Ready for publishing. Calling the registry..
 
 
-❌ Spago is offline - not able to call the Registry.
+❌ Spago is offline - not able to call the Registry.