fix(iOS): update source tag format to include 'v' prefix for version consistency

Author: dos1in

Dimina.podspec

@@ -10,7 +10,7 @@ Pod::Spec.new do |s|
   s.homepage         = 'https://github.com/didi/dimina'
   s.license          = { :type => 'Apache-2.0', :file => 'LICENSE' }
   s.author           = { 'Lehem' => 'lehemyang@gmail.com' }
-  s.source           = { :git => 'https://github.com/didi/dimina.git', :tag => s.version.to_s }
+  s.source           = { :git => 'https://github.com/didi/dimina.git', :tag => "v#{s.version}" }
 
   s.ios.deployment_target = '14.0'
   s.swift_version = '5.0'