Merge bitcoin#30992: doc: update IBD requirements in doc/README.md

36a6d4b doc: update IBD requirements in doc/README.md (Mackain)

Pull request description:

  A small change to the first paragraph of the Setup part of the README that has been bugging me for a while.
  The disk space required for the Bitcoin transactions can no longer be described as "a few" hundred gigabytes.
  So I thought it was time it was changed to "several" instead.

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Tree-SHA512: c5b21aca526c0ebe5f3234bd72e4080dc64cbba0ccd2306397aafe8349bc3573773ee64ff31fafcf59ea1afc7527caaf6d7cd8fe798311d9dc11ad0cd539e21e

Author: achow101

doc/README.md

@@ -3,7 +3,7 @@ Bitcoin Core
 
 Setup
 ---------------------
-Bitcoin Core is the original Bitcoin client and it builds the backbone of the network. It downloads and, by default, stores the entire history of Bitcoin transactions, which requires a few hundred gigabytes of disk space. Depending on the speed of your computer and network connection, the synchronization process can take anywhere from a few hours to a day or more.
+Bitcoin Core is the original Bitcoin client and it builds the backbone of the network. It downloads and, by default, stores the entire history of Bitcoin transactions, which requires several hundred gigabytes or more of disk space. Depending on the speed of your computer and network connection, the synchronization process can take anywhere from a few hours to several days or more.
 
 To download Bitcoin Core, visit [bitcoincore.org](https://bitcoincore.org/en/download/).