Fixed typo in BuildInfo (#6807)

Author: calixtus

src/main/java/org/jabref/logic/util/BuildInfo.java

@@ -51,7 +51,7 @@ public BuildInfo(String path) {
         developers = properties.getProperty("developers", "");
         azureInstrumentationKey = BuildInfo.getValue(properties, "azureInstrumentationKey", "");
         springerNatureAPIKey = BuildInfo.getValue(properties, "springerNatureAPIKey", "118d90a519d0fc2a01ee9715400054d4");
-        astrophysicsDataSystemAPIKey = BuildInfo.getValue(properties, "AstrophysicsDataSystemAPIKey", "tAhPRKADc6cC26mZUnAoBt3MAjCvKbuCZsB4lI3c");
+        astrophysicsDataSystemAPIKey = BuildInfo.getValue(properties, "astrophysicsDataSystemAPIKey", "tAhPRKADc6cC26mZUnAoBt3MAjCvKbuCZsB4lI3c");
         ieeeAPIKey = BuildInfo.getValue(properties, "ieeeAPIKey", "5jv3wyt4tt2bwcwv7jjk7pc3");
         minRequiredJavaVersion = properties.getProperty("minRequiredJavaVersion", "1.8");
         allowJava9 = "true".equals(properties.getProperty("allowJava9", "true"));