chore: Update README.md file

- Make use of cloned repository instead of adding package
- Fix content inside `Visualization`

perf/GLM/README.md

@@ -10,7 +10,7 @@ To switch the version of `GLM.jl`:
 - Change directory to *../PerfChecker.jl/perf/GLM*
 - Access the REPL using `julia -t 10 --project=.`
 - Press the `]` key to access the `pkg` REPL
-- Run `add GLM@x.y.z`, where x.y.z is the respective major, minor and patch version
+- Run `develop <path-to-GLM.jl>`, where GLM.jl is checked out to the required version
 - Close the REPL either by coming out of the pkg REPL mode, and executing the `exit()` command, or by using **Ctrl + D**
 
 This should be repeated after every allocation and benchmark checks have run.
@@ -36,7 +36,7 @@ To run benchmark checks for `GLM.jl`:
 #### Visualization
 
 As mentioned before, due to some of the missing features in `PerfChecker.jl`, running checks might be finicky, and the CSV files may produce messed up visualization. To fix the same:
-- Make sure that filenames inside `mallocs-x.y.z.csv` do not point to a hash directory, for example, if you see *$HOME/.julia/packages/GLM/<some-hash-value>/src/linpred.jl*, make sure to rewrite it to *$HOME/.julia/packages/GLM/src/linpred.jl*.
+- Make sure that filenames inside `mallocs-x.y.z.csv` do not point to a hash directory, for example, if you see *$HOME/.julia/packages/GLM/<some-hash-value>/src/linpred.jl*, make sure to rewrite it to *linpred.jl*.
 - Clone `GLM.jl` on your local machine
 - Create `perf` directory inside the `GLM.jl` project
 - Copy contents of *../PerfChecker.jl/perf/GLM* to the `perf` directory