Update documentation for NUGET_UPDATEFILETIME_MAXRETRIES (#3413)

Author: jeffkl

docs/reference/cli-reference/cli-ref-environment-variables.md

@@ -33,7 +33,7 @@ The list of properties documented in [NuGet pack and restore as MSBuild targets]
 | NUGET_RETRY_HTTP_429 | Change retry behavior on HTTP 429 responses | Prior to NuGet 6.5, NuGet would not retry requests that result in HTTP 429 on 408. The default value is `true`, and this environment variable can be set to `false` to opt-in to older NuGet behaviour (don't retry the request) |
 | NUGET_RESTORE_MSBUILD_VERBOSITY | Sets the MSBuild log verbosity. | Default is *quiet* ("/v:q"). Possible values *q[uiet]*, *m[inimal]*, *n[ormal]*, *d[etailed]*, and *diag[nostic]*. |
 | NUGET_SHOW_STACK | Determines whether the full exception (including stack trace) should be displayed to the user. | Specified as *true* or *false* (default). |
-| NUGET_UPDATEFILETIME_MAXRETRIES | Sets the number of times NuGet will attempt to set the file timestamp when extracting packages. | On Windows anti-virus software might temporarily open files, preventing NuGet from changing the timestamp. NuGet uses an exponential back-off where the wait duration between attempts is `Math.Pow(2, retryNumber)`. The default max retries is 9, meaning the default total wait duration before failure will be approximately one second. |
+| NUGET_UPDATEFILETIME_MAXRETRIES | Sets the number of times NuGet will attempt to retry seting the file timestamp when extracting packages when the first attempt failed. | On Windows anti-virus software might temporarily open files, preventing NuGet from changing the timestamp. NuGet uses an exponential back-off where the wait duration between attempts is `Math.Pow(2, retryNumber)`. The default max retries is 9, meaning the default total wait duration before failure will be approximately one second. |
 | NUGET_XMLDOC_MODE | Determines how assemblies XML documentation file extraction should be handled. | Supported modes are *skip* (do not extract XML documentation files), *compress* (store XML doc files as a zip archive) or *none* (default, treat XML doc files as regular files). |
 | NUGET_CERT_REVOCATION_MODE | Determines how the revocation status check of the certificate used to sign a package, is performed when a signed package is installed or restored. When not set, defaults to `online`.| Possible values *online* (default), *offline*.  Related to [NU3028](../errors-and-warnings/NU3028.md) |
 | NUGET_ENABLE_ENHANCED_HTTP_RETRY | Enables or disables enhanced HTTP retry in NuGet. | Possible values are `true` (default) or `false`. |