Fix typo in gem description [ci skip]

Author: olleolleolle

net-protocol.gemspec

@@ -13,8 +13,8 @@ Gem::Specification.new do |spec|
   spec.authors = ["Yukihiro Matsumoto"]
   spec.email = ["matz@ruby-lang.org"]
 
-  spec.summary       = %q{The abstruct interface for net-* client.}
-  spec.description   = %q{The abstruct interface for net-* client.}
+  spec.summary       = %q{The abstract interface for net-* client.}
+  spec.description   = %q{The abstract interface for net-* client.}
   spec.homepage      = "https://github.com/ruby/net-protocol"
   spec.required_ruby_version = Gem::Requirement.new(">= 2.6.0")
   spec.licenses      = ["Ruby", "BSD-2-Clause"]