Merge bitcoin/bitcoin#23414: wallet: Fix comment grammar in bdb.h

bd9c6ad wallet: Fixed Grammatical error in bdb.h (zealsham)

Pull request description:

  A comment in bdb.h file in the wallet directory contains a grammatical error that makes the underlying code harder to reason about .
  The comment which says `/** Indicate the a new database user has began using the database. */` should actually be
  `/** indicate that a new database user has began using the database. */`. The former is quite confusing , and leaves you wondering what "the a new database user " is refering to . This pull request thus provides value to the bitcoin codebase by improving readability .

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Tree-SHA512: db07cda39f89ac344be3497c884a8c6e4b48276afae18e931a9a8e5732c58eed20645ccd18d6b1212c763f64b1300477c1de26a00b5b3b24e6141ffae3658ca7

Author: laanwj

src/wallet/bdb.h

@@ -113,7 +113,7 @@ class BerkeleyDatabase : public WalletDatabase
      */
     bool Rewrite(const char* pszSkip=nullptr) override;
 
-    /** Indicate the a new database user has began using the database. */
+    /** Indicate that a new database user has begun using the database. */
     void AddRef() override;
     /** Indicate that database user has stopped using the database and that it could be flushed or closed. */
     void RemoveRef() override;