docs: fix formatting in Caching (#2267)

docs/Caching.md

@@ -18,7 +18,8 @@ In parallel, we also take into account in the hash:
 * digests of all the shared libraries in rustc's $sysroot/lib
 * A shared, caching reader for rlib dependencies (for dist-client)
 * Parsed arguments from the rustc invocation
-  See https://github.com/mozilla/sccache/blob/8567bbe2ba493153e76177c1f9a6f98cc7ba419f/src/compiler/rust.rs#L122 for the full list
+  
+See https://github.com/mozilla/sccache/blob/8567bbe2ba493153e76177c1f9a6f98cc7ba419f/src/compiler/rust.rs#L122 for the full list
 
 ### C/C++ compiler
 
@@ -42,6 +43,7 @@ We also take into account in the hash:
 * Whether the compilation is generating profiling or coverage data
 * Color mode
 * Environment variables
+
 See https://github.com/mozilla/sccache/blob/8567bbe2ba493153e76177c1f9a6f98cc7ba419f/src/compiler/c.rs#L84
 
 ### C/C++ preprocessor