fix some typos and style in code and documentation (#201)

Signed-off-by: ccoVeille <3875889+ccoVeille@users.noreply.github.com>

README.md

@@ -38,7 +38,7 @@ GCI splits all import blocks into different sections, now support six section ty
 - localmodule: Put imports from local packages in a separate group
 
 The priority is standard > default > custom > blank > dot > alias > localmodule, all sections sort alphabetically inside.
-By default, blank , dot and alias sections are not used and the corresponding lines end up in the other groups.
+By default, blank, dot, and alias sections are not used, and the corresponding lines end up in the other groups.
 
 All import blocks use one TAB(`\t`) as Indent.
 

pkg/config/config.go

@@ -39,8 +39,8 @@ type YamlConfig struct {
 	SectionStrings          []string   `yaml:"sections"`
 	SectionSeparatorStrings []string   `yaml:"sectionseparators"`
 
-	// Since history issue, Golangci-lint needs Analyzer to run and GCI add an Anzlyzer layer to integrate.
-	// The ModPath param is only from analyer.go, no need to set it in all other places.
+	// Since history issue, Golangci-lint needs Analyzer to run and GCI add an Analyzer layer to integrate.
+	// The ModPath param is only from analyzer.go, no need to set it in all other places.
 	ModPath string `yaml:"-"`
 }
 
@@ -98,8 +98,8 @@ func ParseConfig(in string) (*Config, error) {
 }
 
 // configureSections now only do golang module path finding.
-// Since history issue, Golangci-lint needs Analyzer to run and GCI add an Anzlyzer layer to integrate.
-// The path param is from analyer.go, in all other places should pass empty string.
+// Since history issue, Golangci-lint needs Analyzer to run and GCI add an Analyzer layer to integrate.
+// The path param is from analyzer.go, in all other places should pass empty string.
 func configureSections(sections section.SectionList, path string) error {
 	for _, sec := range sections {
 		switch s := sec.(type) {

pkg/gci/testdata.go

@@ -421,7 +421,7 @@ import (
 `,
 	},
 	{
-		"comment-whithout-whitespace",
+		"comment-without-whitespace",
 
 		commonConfig,