Minor typos (#1595)

* Remove extra backtick

* Reword explanation of update

* Reword explanation of relative update

* Change "remaple" to "remain"

* Change "clovver" to "clobber"

* Reword explanation of update for comment operators

* Reword explanation of relative update for comment operators

* Change "array" to "expression"

* Change "the golangs" to "Golang's"

* Change "golangs" to "Golang's"

* Change "can durations" to "can add durations"

* Change "array scalars" to "arrays"

* Change "beit" to "be it"

* Fix typo in `eval` tip

* Fix typo in header for `has` operation

* Add space before pipe in `line` operator example

* Fix typos in explanation of deep array merges

* Change "is now used" to "is now used."

* Change "object," to "object."

* Changes "indexes" to "indices"

* Remove extraneous copied text from `..` article

* Reword explanation of `...` operator

* Change "your are" to "you are"

* Add link to `string` operator docs in `select` article

* Change "is a" to "parameter specifies" in `string` operators article

* Change "new line" to "newline"

* Change "golang regex" to "Golang's regex"

* Change "golang" to "Golang"

* Add period

* Remove comma in `subtract` article

* Remove duplicate number subtraction example

* Remove comma in `traverse` operator article

* Clarify use of brackets when `read`ing with special characters

pkg/yqlib/operator_strings_test.go

@@ -205,7 +205,7 @@ var stringsOperatorScenarios = []expressionScenario{
 	},
 	{
 		description:    "Substitute / Replace string",
-		subdescription: "This uses golang regex, described [here](https://github.com/google/re2/wiki/Syntax)\nNote the use of `|=` to run in context of the current string value.",
+		subdescription: "This uses Golang's regex, described [here](https://github.com/google/re2/wiki/Syntax).\nNote the use of `|=` to run in context of the current string value.",
 		document:       `a: dogs are great`,
 		expression:     `.a |= sub("dogs", "cats")`,
 		expected: []string{
@@ -214,7 +214,7 @@ var stringsOperatorScenarios = []expressionScenario{
 	},
 	{
 		description:    "Substitute / Replace string with regex",
-		subdescription: "This uses golang regex, described [here](https://github.com/google/re2/wiki/Syntax)\nNote the use of `|=` to run in context of the current string value.",
+		subdescription: "This uses Golang's regex, described [here](https://github.com/google/re2/wiki/Syntax).\nNote the use of `|=` to run in context of the current string value.",
 		document:       "a: cat\nb: heat",
 		expression:     `.[] |= sub("(a)", "${1}r")`,
 		expected: []string{