fix a number of minor typos

Fix 19 typos, grammatical errors and duplicated words.

These fixes have minimal impact on the code as these are either in the
doc files or in comments inside the code files.

Signed-off-by: Abdur Rehman <abdur_rehman@mentor.com>

cli/command/image/build.go

@@ -305,8 +305,8 @@ func runBuild(dockerCli command.Cli, options buildOptions) error {
 		progressOutput = &lastProgressOutput{output: progressOutput}
 	}
 
-	// if up to this point nothing has set the context then we must have have
-	// another way for sending it(streaming) and set the context to the Dockerfile
+	// if up to this point nothing has set the context then we must have another
+	// way for sending it(streaming) and set the context to the Dockerfile
 	if dockerfileCtx != nil && buildCtx == nil {
 		buildCtx = dockerfileCtx
 	}

cli/config/configfile/file.go

@@ -177,7 +177,7 @@ func (configFile *ConfigFile) Save() error {
 	return configFile.SaveToWriter(f)
 }
 
-// ParseProxyConfig computes proxy configuration by retreiving the config for the provided host and
+// ParseProxyConfig computes proxy configuration by retrieving the config for the provided host and
 // then checking this against any environment variables provided to the container
 func (configFile *ConfigFile) ParseProxyConfig(host string, runOpts []string) map[string]*string {
 	var cfgKey string

cli/trust/trust.go

@@ -299,7 +299,7 @@ type ImageRefAndAuth struct {
 }
 
 // GetImageReferencesAndAuth retrieves the necessary reference and auth information for an image name
-// as a ImageRefAndAuth struct
+// as an ImageRefAndAuth struct
 func GetImageReferencesAndAuth(ctx context.Context, authResolver func(ctx context.Context, index *registrytypes.IndexInfo) types.AuthConfig, imgName string) (ImageRefAndAuth, error) {
 	ref, err := reference.ParseNormalizedNamed(imgName)
 	if err != nil {