Mass-replace blurb with seo:description in frontmatter

content/use-cases/tokenization/authorized-minter.md

@@ -1,7 +1,8 @@
 ---
 html: authorized-minter.html
 parent: nft-mkt-overview.html
-blurb: Minting and selling NFTs for another account.
+seo:
+    description: Minting and selling NFTs for another account.
 labels:
   - Tokenization
 ---

content/use-cases/tokenization/digital-artist.md

@@ -1,7 +1,8 @@
 ---
 html: digital-artist.html
 parent: nft-mkt-overview.html
-blurb: Creating an NFT Marketplace for buying and selling NFTs.
+seo:
+    description: Creating an NFT Marketplace for buying and selling NFTs.
 labels:
   - Tokenization
 ---

content/use-cases/tokenization/index.md

@@ -4,7 +4,8 @@ parent: use-cases.html
 top_nav_grouping: Article Types
 metadata:
   indexPage: true
-blurb: Work with a variety of tokens supported by the XRP Ledger.
+seo:
+    description: Work with a variety of tokens supported by the XRP Ledger.
 ---
 # Tokenization
 

content/use-cases/tokenization/nft-mkt-overview.md

@@ -1,7 +1,8 @@
 ---
 html: nft-mkt-overview.html
 parent: tokenization.html
-blurb: Overview of NFT Marketplace use cases.
+seo:
+    description: Overview of NFT Marketplace use cases.
 labels:
   - Tokenization
 ---

content/use-cases/tokenization/nftoken-marketplace.md

@@ -1,7 +1,8 @@
 ---
 html: nftoken-marketplace.html
 parent: nft-mkt-overview.html
-blurb: Creating an NFT Marketplace for buying and selling NFTs.
+seo:
+    description: Creating an NFT Marketplace for buying and selling NFTs.
 labels:
   - Tokenization
 ---

content/use-cases/tokenization/stablecoin-issuer.md

@@ -1,7 +1,8 @@
 ---
 html: stablecoin-issuer.html
 parent: tokenization.html
-blurb: Issue your own stablecoin, based on assets of equal value outside of the XRP Ledger.
+seo:
+    description: Issue your own stablecoin, based on assets of equal value outside of the XRP Ledger.
 labels:
   - Tokens
   - Stablecoin