remove duplicate can be

Author: B1F030

content/200-orm/500-reference/300-environment-variables-reference.mdx

@@ -167,7 +167,7 @@ This environment variable is available since version `4.16.0`
 
 </Admonition>
 
-`PRISMA_ENGINES_CHECKSUM_IGNORE_MISSING` can be can be set to a truthy value to ignore problems around downloading & verifying the integrity (via a checksum file) of the Prisma ORM engines.
+`PRISMA_ENGINES_CHECKSUM_IGNORE_MISSING` can be set to a truthy value to ignore problems around downloading & verifying the integrity (via a checksum file) of the Prisma ORM engines.
 This is particularly useful when deploying to an offline system environment where the checksum file cannot be downloaded.
 
 ```env