docs: update docs to follow the latest version of the HIP

See helm/community#321

Signed-off-by: Dominykas Blyžė <hello@dominykas.com>

cmd/helm/dependency.go

@@ -73,34 +73,32 @@ repository added to helm by "helm add repo". Version matching is also supported
 for this case.
 
 A repository can be defined as a git URL. The path must start with a prefix of
-"git://" followed by a valid git repository URL.
+"git+" followed by a valid git repository URL.
 
     # Chart.yaml
     dependencies:
     - name: helm-chart
       version: "main"
-      repository: "git://https://github.com/helm/helm-chart.git"
+      repository: "git+https://github.com/helm/helm-chart.git"
 
 The 'repository' can be the https or ssh URL that you would use to clone a git
 repo or add as a git remote, prefixed with 'git:'.
-For example 'git://git@github.com:helm/helm-chart.git' or
-'git://https://github.com/helm/helm-chart.git'
+For example 'git+ssh://github.com:helm/helm-chart.git' or
+'git+https://github.com/helm/helm-chart.git'
 
-When using a 'git://' repository, the 'version' must be a valid  semantic tag or branch
-name for the git repo. For example 'master'.
+When using a 'git[+subprotocol]>://' repository, the 'version' must be a valid
+tag or branch name for the git repo, for example 'main'.
 
 Limitations when working with git repositories:
 * Helm will use the 'git' executable on your system to retrieve information
 about the repo. The 'git' command must be properly configured and available
 on the PATH.
 * When specifying a private repo, if git tries to query the user for
-username/passowrd for an HTTPS url, or for a certificate password for an SSH
-url, it may cause Helm to hang. Input is not forwarded to the child git
-process, so it will not be able to receive user input. For private repos
-it is recommended to use an SSH git url, and have your git client configured
-with an SSH cert that does not require a password.
-* The helm chart and 'Chart.yaml' must be in the root of the git repo.
-The chart cannot be loaded from a subdirectory.
+username/password for an HTTPS URL, or for a certificate password for an SSH
+URL, it may cause Helm to hang. Input is not forwarded to the child git
+process, so it will not be able to receive user input. Authentication can be
+configured by using a git credentials helper which can read the credentials
+from environment variables, from operating system keychain, etc.
 `
 
 const dependencyListDesc = `

internal/resolver/resolver.go

@@ -120,7 +120,7 @@ func (r *Resolver) Resolve(reqs []*chart.Dependency, repoNames map[string]string
 
 			if !found {
 				return nil, fmt.Errorf(`dependency %q is missing git branch or tag: %s.
-			When using a "git://" type repository, the "version" should be a valid branch or tag name`, d.Name, d.Version)
+			When using a "git[+subprotocol]://" type repository, the "version" should be a valid branch or tag name`, d.Name, d.Version)
 			}
 
 			locked[i] = &chart.Dependency{