CI: bump gotip to February

While here, fix two typos.

.github/workflows/test.yml

@@ -61,7 +61,7 @@ jobs:
     steps:
     - name: Install Go
       env:
-        GO_COMMIT: 3b5eec937018be98549dea7067964018f0e5824c # 2022-01-14
+        GO_COMMIT: e50f0f372b07149e9cf16b8fec80d2d72efe2a87 # 2022-02-11
       run: |
         cd $HOME
         mkdir $HOME/gotip

internal/asthelper/asthelper.go

@@ -65,7 +65,7 @@ func ReturnStmt(results ...ast.Expr) *ast.ReturnStmt {
 	}
 }
 
-// BlockStmt a block of multiple statments e.g. a function body
+// BlockStmt a block of multiple statements e.g. a function body
 func BlockStmt(stmts ...ast.Stmt) *ast.BlockStmt {
 	return &ast.BlockStmt{List: stmts}
 }

internal/literals/literals.go

@@ -154,7 +154,7 @@ func Obfuscate(file *ast.File, info *types.Info, fset *token.FileSet, linkString
 
 	file = astutil.Apply(file, pre, post).(*ast.File)
 
-	// some imported constants might not be needed anymore, remove unnessecary imports
+	// some imported constants might not be needed anymore, remove unnecessary imports
 	for _, imp := range file.Imports {
 		path, err := strconv.Unquote(imp.Path.Value)
 		if err != nil {