Fix function comments based on best practices from Effective Go

Signed-off-by: CodeLingo Bot <bot@codelingo.io>

flags.go

@@ -36,7 +36,7 @@ type pflagValue struct {
 	flag *pflag.Flag
 }
 
-// HasChanges returns whether the flag has changes or not.
+// HasChanged returns whether the flag has changes or not.
 func (p pflagValue) HasChanged() bool {
 	return p.flag.Changed
 }

viper.go

@@ -226,7 +226,7 @@ func New() *Viper {
 	return v
 }
 
-// Intended for testing, will reset all to default settings.
+// Reset: Intended for testing, will reset all to default settings.
 // In the public interface for the viper package so applications
 // can use it in their testing as well.
 func Reset() {
@@ -1142,7 +1142,7 @@ func (v *Viper) SetEnvKeyReplacer(r *strings.Replacer) {
 	v.envKeyReplacer = r
 }
 
-// Aliases provide another accessor for the same key.
+// RegisterAlias: Aliases provide another accessor for the same key.
 // This enables one to change a name without breaking the application
 func RegisterAlias(alias string, key string) { v.RegisterAlias(alias, key) }
 func (v *Viper) RegisterAlias(alias string, key string) {

viper_test.go

@@ -1774,7 +1774,7 @@ func BenchmarkGet(b *testing.B) {
 	}
 }
 
-// This is the "perfect result" for the above.
+// BenchmarkGetBoolFromMap is the "perfect result" for the above.
 func BenchmarkGetBoolFromMap(b *testing.B) {
 	m := make(map[string]bool)
 	key := "BenchmarkGetBool"