Fix Release version text

[t-kikuc]

What this PR does / why we need it:

Since the site is launched by the following command,
the RELEASE file should start with tag: vX.Y.Z.

pipecd/Makefile

Line 153 in daf0a09

env RELEASE=$(shell head -n 1 RELEASE | cut -d ' ' -f 2) hugo server --source=docs

Now: Generated is shown. (other docs too)
~

Which issue(s) this PR fixes:

N/A

Does this PR introduce a user-facing change?:

• How are users affected by this change:
• Is this breaking change:
• How to migrate (if breaking change):

[github-actions]

No GitHub releases will be created one this pull request got merged. Because the following tags were already created before.

• v0.48.8

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 22.86%. Comparing base (e7c40a0) to head (9612286).
Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #5192   +/-   ##
=======================================
  Coverage   22.86%   22.86%           
=======================================
  Files         420      420           
  Lines       45247    45247           
=======================================
  Hits        10344    10344           
  Misses      34108    34108           
  Partials      795      795           

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[khanhtc1202]

@t-kikuc could you test with make release command?

[ffjlabo]

🚀

[t-kikuc]

@khanhtc1202 I'm testing and fixing

[github-actions]

No GitHub releases will be created one this pull request got merged. Because the following tags were already created before.

• v0.48.8

[t-kikuc]

@khanhtc1202 I fixed 9e4cab5

[khanhtc1202]

I would like to keep this file as is, since other generated file usually have the comment about it on the top 👀

[t-kikuc]

@khanhtc1202 fixed
9612286

[khanhtc1202]

Nice 👍

[ffjlabo]

Thank you!