doc: fix environment variable typo

[khg0712]

I think NODE_ENV is right variable name.
It happened in this commit

PREV

Use the experimental-serverless-trace target to build your next app. This is the same build target that Vercel Now uses. See this RFC for details. Note: while using this, you may need to set NODE_ENV variable to production.

AFTER

Use the experimental-serverless-trace target to build your next app. This is the same build target that Vercel Now uses. See this RFC for details. Note: while using this, you may need to setNODE*ENVvariable toproduction.

REF:

serverless-next.js/packages/serverless-components/nextjs-cdk-construct/examples/basic/package.json

Line 9 in ecb03a6

"next:build:prod": "NODE_ENV=production next build",

[slsnextbot]

Handler Size Report

No changes to handler sizes.

Base Handler Sizes (kB) (commit ecb03a6)

{
    "Lambda": {
        "Default Lambda": {
            "Standard": 1524,
            "Minified": 668
        },
        "Image Lambda": {
            "Standard": 1488,
            "Minified": 800
        }
    },
    "Lambda@Edge": {
        "Default Lambda": {
            "Standard": 1534,
            "Minified": 673
        },
        "Default Lambda V2": {
            "Standard": 1526,
            "Minified": 670
        },
        "API Lambda": {
            "Standard": 634,
            "Minified": 318
        },
        "Image Lambda": {
            "Standard": 1496,
            "Minified": 805
        },
        "Regeneration Lambda": {
            "Standard": 1187,
            "Minified": 546
        },
        "Regeneration Lambda V2": {
            "Standard": 1253,
            "Minified": 573
        }
    }
}

New Handler Sizes (kB) (commit 9271a04)

{
    "Lambda": {
        "Default Lambda": {
            "Standard": 1524,
            "Minified": 668
        },
        "Image Lambda": {
            "Standard": 1488,
            "Minified": 800
        }
    },
    "Lambda@Edge": {
        "Default Lambda": {
            "Standard": 1534,
            "Minified": 673
        },
        "Default Lambda V2": {
            "Standard": 1526,
            "Minified": 670
        },
        "API Lambda": {
            "Standard": 634,
            "Minified": 318
        },
        "Image Lambda": {
            "Standard": 1496,
            "Minified": 805
        },
        "Regeneration Lambda": {
            "Standard": 1187,
            "Minified": 546
        },
        "Regeneration Lambda V2": {
            "Standard": 1253,
            "Minified": 573
        }
    }
}

[codecov]

Codecov Report

Merging #2342 (9271a04) into master (ecb03a6) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #2342   +/-   ##
=======================================
  Coverage   83.55%   83.55%           
=======================================
  Files         102      102           
  Lines        3679     3679           
  Branches     1176     1176           
=======================================
  Hits         3074     3074           
  Misses        593      593           
  Partials       12       12           

---

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 ecb03a6...9271a04. Read the comment docs.