Fix InvalidInlineTag error flagged by error prone

Running recent error prone version complaining on that code:

RefDatabase.java:444: error: [InvalidInlineTag] Tag name `linkObjectId`
is unknown.
	 * Includes peeled {@linkObjectId}s. This is the inverse lookup of
	                   ^
    (see https://errorprone.info/bugpattern/InvalidInlineTag)

Bug: 562756
Change-Id: If91da51d5138fb753c0550eeeb9e3883a394123d
Signed-off-by: David Ostrovsky <david@ostrovsky.org>

org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/reftable/ReftableDatabase.java

@@ -280,7 +280,7 @@ public abstract class ReftableDatabase {
 
 	/**
 	 * Returns all refs that resolve directly to the given {@link ObjectId}.
-	 * Includes peeled {@linkObjectId}s.
+	 * Includes peeled {@link ObjectId}s.
 	 *
 	 * @param id
 	 *            {@link ObjectId} to resolve

org.eclipse.jgit/src/org/eclipse/jgit/lib/RefDatabase.java

@@ -441,7 +441,7 @@ public abstract class RefDatabase {
 
 	/**
 	 * Returns all refs that resolve directly to the given {@link ObjectId}.
-	 * Includes peeled {@linkObjectId}s. This is the inverse lookup of
+	 * Includes peeled {@link ObjectId}s. This is the inverse lookup of
 	 * {@link #exactRef(String...)}.
 	 *
 	 * <p>