regexp: add example for ReplaceAll

[psampaz]

Updates #21450

[gopherbot]

This PR (HEAD: cc85544) has been imported to Gerrit for code review.

Please visit https://go-review.googlesource.com/c/go/+/189137 to see it.

Tip: You can toggle comments from me using the comments slash command (e.g. /comments off)
See the Wiki page for more info

[gopherbot]

Message from Gobot Gobot:

Patch Set 1:

Congratulations on opening your first change. Thank you for your contribution!

Next steps:
Within the next week or so, a maintainer will review your change and provide
feedback. See https://golang.org/doc/contribute.html#review for more info and
tips to get your patch through code review.

Most changes in the Go project go through a few rounds of revision. This can be
surprising to people new to the project. The careful, iterative review process
is our way of helping mentor contributors and ensuring that their contributions
have a lasting impact.

During May-July and Nov-Jan the Go project is in a code freeze, during which
little code gets reviewed or merged. If a reviewer responds with a comment like
R=go1.11, it means that this CL will be reviewed as part of the next development
cycle. See https://golang.org/s/release for more details.

---

Please don’t reply on this GitHub thread. Visit golang.org/cl/189137.
After addressing review feedback, remember to publish your drafts!

[gopherbot]

Message from Agniva De Sarker:

Patch Set 1:

Thanks for the change Pantelis. And congrats on your first contribution :)

If you didn't know, we have a pending issue to track the addition of examples to the regexp package. Please add "Updates #21450" to this issue and the other one. And if you want, you can go ahead and add the other examples listed here #21450 (comment) to close out the issue.

---

Please don’t reply on this GitHub thread. Visit golang.org/cl/189137.
After addressing review feedback, remember to publish your drafts!

[gopherbot]

Message from Pantelis Sampaziotis:

Patch Set 2:

Patch Set 1:

Thanks for the change Pantelis. And congrats on your first contribution :)

If you didn't know, we have a pending issue to track the addition of examples to the regexp package. Please add "Updates #21450" to this issue and the other one. And if you want, you can go ahead and add the other examples listed here #21450 (comment) to close out the issue.

Thanks,

I added examples for the other 3 methods here #33497

---

Please don’t reply on this GitHub thread. Visit golang.org/cl/189137.
After addressing review feedback, remember to publish your drafts!

[gopherbot]

Message from Sylvain Zimmer:

Patch Set 2: Run-TryBot+1

---

Please don’t reply on this GitHub thread. Visit golang.org/cl/189137.
After addressing review feedback, remember to publish your drafts!

[gopherbot]

Message from Gobot Gobot:

Patch Set 2:

TryBots beginning. Status page: https://farmer.golang.org/try?commit=69a290ff

---

Please don’t reply on this GitHub thread. Visit golang.org/cl/189137.
After addressing review feedback, remember to publish your drafts!

[gopherbot]

Message from Gobot Gobot:

Patch Set 2: TryBot-Result+1

TryBots are happy.

---

Please don’t reply on this GitHub thread. Visit golang.org/cl/189137.
After addressing review feedback, remember to publish your drafts!

[gopherbot]

Message from Agniva De Sarker:

Patch Set 2:

Adding some folks who can take this forward.

---

Please don’t reply on this GitHub thread. Visit golang.org/cl/189137.
After addressing review feedback, remember to publish your drafts!

[gopherbot]

Message from Ian Lance Taylor:

Patch Set 2: Code-Review+2

Thanks.

---

Please don’t reply on this GitHub thread. Visit golang.org/cl/189137.
After addressing review feedback, remember to publish your drafts!

[gopherbot]

This PR is being closed because golang.org/cl/189137 has been merged.