Lowercase everything, remove resulting redundancies

Author: cotti

config/synonyms.yml

@@ -1,22 +1,22 @@
 synonyms:
-  - [ ".net", ".NET", "c#", "csharp", "dotnet", "net", "NET", "DOTNET" ]
+  - [ ".net", "c#", "csharp", "dotnet", "net" ]
   - [ "esql", "es|ql" ]
-  - [ "motlp", "managed otlp", "Managed OTLP" ]
+  - [ "motlp", "managed otlp" ]
   - [ "s3", "aws s3", "amazon s3" ]
   - [ "es", "elasticsearch" ]
-  - [ "Elastic Learned Sparse EncodeR", "elser" ]
+  - [ "elastic learned sparse encoder", "elser" ]
   - [ "ccs", "cross cluster search", "cross-cluster search", "spaghetti" ]
   - [ "apm", "application performance monitoring" ]
-  - [ "ecctl", "Elastic Cloud Control" ]
+  - [ "ecctl", "elastic cloud control" ]
   - [ "opentelemetry", "otel" ]
-  - [ "eck", "Elastic Cloud on Kubernetes" ]
-  - [ "ece", "Elastic Cloud Enterprise" ]
-  - [ "ELv2", "Elastic License v2" ]
-  - [ "kql", "Kibana Query Language" ]
+  - [ "eck", "elastic cloud on kubernetes" ]
+  - [ "ece", "elastic cloud enterprise" ]
+  - [ "elv2", "elastic license v2" ]
+  - [ "kql", "kibana query language" ]
   - [ "ccr", "cross-cluster replication", "cross cluster replication" ]
-  - [ "ESaaS", "Elastic Stack as a service" ]
-  - [ "knn", "k-Nearest Neighbors" ]
-  - [ "ech", "Elastic Cloud Hosted", "ess" ]
+  - [ "esaas", "elastic stack as a service" ]
+  - [ "knn", "k-nearest neighbors" ]
+  - [ "ech", "elastic cloud hosted", "ess" ]
   - [ "aws", "amazon" ]
   - [ "ilm", "index lifecycle management" ]
   - [ "javascript", "js", "node", "nodejs", "node.js" ]