fix: grammar typo

[fredster33]

Please answer these questions before submitting a pull request

• Why submit this pull request?

• Bugfix

• New feature provided

• Improve performance

• Backport patches

• Related issues

---

Bugfix

• Description
  This is a grammar fix to the README.
• How to fix?
  N/A

---

New feature or improvement

• Describe the details and related test reports.
  N/A

---

Backport patches

• Why need to backport?
  N/A
• Source branch
  patch-2
• Related commits and pull requests
  N/A
• Target branch
  master

[gxthrj]

@fredster33 There are conflicting files

[fredster33]

@fredster33 There are conflicting files

Hmm, it seems like somebody else edited the README after my change. How could this be resolved?

[tokers]

@fredster33 Don't worry, I have solved these conflicts.

[codecov-io]

Codecov Report

Merging #291 (01bdaf0) into master (c65802c) will increase coverage by 47.80%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##           master      #291       +/-   ##
============================================
+ Coverage   52.19%   100.00%   +47.80%     
============================================
  Files          32         1       -31     
  Lines        2320         1     -2319     
============================================
- Hits         1211         1     -1210     
+ Misses        952         0      -952     
+ Partials      157         0      -157     

Impacted Files	Coverage Δ
pkg/metrics/prometheus.go
pkg/api/router/router.go
pkg/apisix/cluster.go
pkg/log/logger.go
cmd/ingress/ingress.go
pkg/log/default_logger.go
pkg/apisix/service.go
pkg/log/options.go
pkg/kube/translation/apisix_upstream.go
pkg/kube/translation/apisix_route.go
... and 23 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update c65802c...01bdaf0. Read the comment docs.